{"id":17186,"date":"2026-01-31T08:34:48","date_gmt":"2026-01-31T07:34:48","guid":{"rendered":"https:\/\/webhosting.de\/dns-architektur-hosting-resolver-ttl-performance-cacheboost\/"},"modified":"2026-01-31T08:34:48","modified_gmt":"2026-01-31T07:34:48","slug":"dns%e3%82%a2%e3%83%bc%e3%82%ad%e3%83%86%e3%82%af%e3%83%81%e3%83%a3-%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0-%e3%83%aa%e3%82%be%e3%83%ab%e3%83%90-ttl%e3%83%91%e3%83%95%e3%82%a9%e3%83%bc","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/dns-architektur-hosting-resolver-ttl-performance-cacheboost\/","title":{"rendered":"\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306b\u304a\u3051\u308bDNS\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\uff1a\u30ea\u30be\u30eb\u30d0\u3001TTL\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9"},"content":{"rendered":"<p><strong>DNS\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3<\/strong> \u30ea\u30be\u30eb\u30d0\u30ad\u30e3\u30c3\u30b7\u30e5\u3001\u6709\u52b9\u306aTTL\u5024\u3001\u305d\u3057\u3066\u6a29\u5a01\u3042\u308b\u30b5\u30fc\u30d0\u306e\u4e16\u754c\u7684\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u4ecb\u3057\u3066\u7d4c\u8def\u304c\u5c0e\u304b\u308c\u307e\u3059\u3002\u3069\u306e\u3088\u3046\u306b <strong>\u30ea\u30be\u30eb\u30d0<\/strong>, TTL\u3068\u30a8\u30cb\u30fc\u30ad\u30e3\u30b9\u30c8\u306f\u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5f62\u6210\u3057\u3001\u308f\u305a\u304b\u306a\u8a2d\u5b9a\u3067\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u3084\u969c\u5bb3\u3001\u4e0d\u8981\u306a\u8ca0\u8377\u3092\u56de\u907f\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n<h2>\u4e2d\u5fc3\u70b9<\/h2>\n<ul>\n  <li><strong>\u30ea\u30be\u30eb\u30d0<\/strong> \u30a6\u30a9\u30fc\u30e0\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u30b3\u30fc\u30eb\u30c9\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u52dd\u308b\u3002.<\/li>\n  <li><strong>TTL<\/strong> \u9ad8\u3059\u304e\u308b\u3068\u5909\u66f4\u304c\u9045\u304f\u306a\u308a\u3001\u4f4e\u3059\u304e\u308b\u3068\u554f\u3044\u5408\u308f\u305b\u304c\u6bba\u5230\u3059\u308b\u3002.<\/li>\n  <li><strong>\u30a8\u30cb\u30fc\u30ad\u30e3\u30b9\u30c8<\/strong> \u3068\u30b8\u30aa\u30fb\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306f\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u307e\u3067\u306e\u8ddd\u96e2\u3092\u77ed\u7e2e\u3057\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u5fdc\u7b54\u6642\u9593\u3092\u6539\u5584\u3059\u308b\u3002.<\/li>\n  <li><strong>\u30c7\u30a3\u30ca\u30bb\u30c3\u30af<\/strong> \u5197\u9577\u6027\u306f\u6545\u969c\u306e\u30ea\u30b9\u30af\u3092\u8efd\u6e1b\u3059\u308b\u3002.<\/li>\n  <li><strong>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/strong> \u30ec\u30a4\u30c6\u30f3\u30b7\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u3001\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u3092\u6e2c\u5b9a\u3057\u3001\u6700\u9069\u5316\u3092\u56f3\u308b\u3002.<\/li>\n<\/ul>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/01\/dns-serverraum-7983.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u65e5\u5e38\u7684\u306a\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306b\u304a\u3051\u308bDNS\u30ea\u30be\u30eb\u30d0\u306e\u4ed5\u7d44\u307f<\/h2>\n<p>A <strong>\u30ea\u30be\u30eb\u30d0<\/strong> \u306f\u3001\u30eb\u30fc\u30c8\u30b5\u30fc\u30d0\u30fc\u3001TLD\u30b5\u30fc\u30d0\u30fc\u3001\u6a29\u5a01\u30b5\u30fc\u30d0\u30fc\u306b\u518d\u5e30\u7684\u306b\u554f\u3044\u5408\u308f\u305b\u308b\u524d\u306b\u3001\u307e\u305a\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u7b54\u3048\u304c\u591a\u3051\u308c\u3070\u591a\u3044\u307b\u3069\u3001\u4f5c\u6210\u3055\u308c\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d1\u30b9\u306f\u5c11\u306a\u304f\u306a\u308a\u3001\u5f85\u3061\u6642\u9593\u3068\u30b5\u30fc\u30d0\u30fc\u306e\u8ca0\u8377\u304c\u8efd\u6e1b\u3055\u308c\u307e\u3059\u3002\u307e\u305f\u3001\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30fb\u30b7\u30b9\u30c6\u30e0\u3001\u30d6\u30e9\u30a6\u30b6\u3001\u30eb\u30fc\u30bf\u30fc\u306f\u305d\u308c\u305e\u308c\u72ec\u81ea\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u6301\u3061\u3001\u4e92\u3044\u306b\u5f71\u97ff\u3057\u5408\u3063\u3066\u3044\u308b\u3053\u3068\u306b\u3082\u6ce8\u610f\u3057\u305f\u3044\u3002\u5b9f\u969b\u306b\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e\u6700\u9069\u5316\u3001\u305f\u3068\u3048\u3070 <a href=\"https:\/\/webhosting.de\/ja\/dns%e3%82%ad%e3%83%a3%e3%83%83%e3%82%b7%e3%83%a5%e3%82%af%e3%83%a9%e3%82%a4%e3%82%a2%e3%83%b3%e3%83%88%e3%81%ae%e3%83%ad%e3%83%bc%e3%83%89%e6%99%82%e9%96%93%e3%82%92%e6%9c%80%e9%81%a9%e5%8c%96\/\">\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3067\u306eDNS\u30ad\u30e3\u30c3\u30b7\u30e5<\/a>, \u3092\u4f7f\u7528\u3057\u3066\u3001\u7e70\u308a\u8fd4\u3057\u691c\u7d22\u3092\u30ed\u30fc\u30ab\u30eb\u3067\u63d0\u4f9b\u3059\u308b\u3002\u30a6\u30a9\u30fc\u30e0\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306f\u3001\u65e5\u5e38\u7684\u306a\u4f7f\u7528\u306b\u304a\u3044\u3066\u3001\u500b\u3005\u306e\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e\u6700\u9069\u5316\u3088\u308a\u3082\u8aac\u5f97\u529b\u304c\u3042\u308b\u3053\u3068\u304c\u591a\u3044\u3002 <strong>\u30ad\u30e3\u30c3\u30b7\u30e5<\/strong>-\u30d2\u30c3\u30c8\u306f\u3059\u3079\u3066\u306e\u30d7\u30ed\u30bb\u30b9\u3092\u77ed\u7e2e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002.<\/p>\n\n<h2>\u30ea\u30be\u30eb\u30d0\u306e\u8a73\u7d30\uff1a\u30cd\u30ac\u30c6\u30a3\u30d6\u30fb\u30ad\u30e3\u30c3\u30b7\u30e5\u3001\u6700\u5c0f\u9650\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u3001NODATA<\/h2>\n<p>\u30dd\u30b8\u30c6\u30a3\u30d6\u306a\u30d2\u30c3\u30c8\u306b\u52a0\u3048\u3066 <strong>\u30cd\u30ac\u30c6\u30a3\u30d6\u30ad\u30e3\u30c3\u30b7\u30e5<\/strong> \u91cd\u8981\uff1aNXDOMAIN\u3068NODATA\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u306f\u3001\u6b21\u306e\u3088\u3046\u306b\u5236\u5fa1\u3055\u308c\u3001\u9650\u3089\u308c\u305f\u6642\u9593\u3060\u3051\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002 <strong>SOA<\/strong>-\u30be\u30fc\u30f3\u306e\u30a8\u30f3\u30c8\u30ea\u30fc(\u8ca0\u306eTTL)\u3002\u3053\u306e\u5024\u3092\u9ad8\u304f\u8a2d\u5b9a\u3057\u904e\u304e\u308b\u3068\u3001\u30bf\u30a4\u30d7\u30df\u30b9\u3084\u4e00\u6642\u7684\u306b\u6b20\u843d\u3057\u305f \u30ec\u30b3\u30fc\u30c9\u304c\u8457\u3057\u304f\u9577\u304f\u6d41\u901a\u3057\u7d9a\u3051\u308b\u3053\u3068\u306b\u306a\u308b\u3002\u4e00\u65b9\u3001\u4f4e\u3059\u304e\u308b\u5024\u306f\u30ea\u30ab\u30fc\u30b5\u3084\u6a29\u5a01\u30b5\u30fc\u30d0\u306e\u8ca0\u8377\u3092\u5897\u5927\u3055\u305b\u308b\u3002\u3053\u3053\u3067\u306f\u3001\u5909\u66f4\u983b\u5ea6\u3068\u30a8\u30e9\u30fc\u8a31\u5bb9\u5ea6\u306b\u898b\u5408\u3063\u305f\u9069\u5ea6\u306a\u5024\u3092\u610f\u56f3\u7684\u306b\u9078\u3093\u3067\u3044\u308b\u3002\u307e\u305f\u3001\u201e<strong>\u6700\u4f4e\u9650\u306e\u5bfe\u5fdc<\/strong>\u201c: \u6a29\u5a01\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u672c\u5f53\u306b\u5fc5\u8981\u306a\u30c7\u30fc\u30bf\u3060\u3051\u3092 \u201eAdditional \u201c\u306e\u90e8\u5206\u3067\u914d\u4fe1\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u65ad\u7247\u5316\u304c\u6e1b\u308a\u3001UDP\u306e\u6210\u529f\u7387\u304c\u5411\u4e0a\u3057\u3001\u5f85\u3061\u6642\u9593\u304c\u30b9\u30e0\u30fc\u30ba\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n<p>\u898b\u843d\u3068\u3055\u308c\u304c\u3061\u306a\u9055\u3044\u3060\uff1a <strong>\u30a8\u30cc\u30a8\u30c3\u30af\u30b9\u30c9\u30e1\u30a4\u30f3<\/strong> (\u540d\u524d\u306f\u5b58\u5728\u3057\u307e\u305b\u3093\uff09vs. <strong>NODATA<\/strong> (\u540d\u524d\u306f\u5b58\u5728\u3059\u308b\u304c\u3001\u3053\u306e\u30bf\u30a4\u30d7\u306e\u30ec\u30b3\u30fc\u30c9\u306f\u306a\u3044\uff09\u3002\u3069\u3061\u3089\u306e\u30b1\u30fc\u30b9\u3082\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u308b\u304c\u3001\u30ea\u30be\u30eb\u30d0\u3067\u306f\u7570\u306a\u308b\u52d5\u4f5c\u3092\u3059\u308b\u3002SOA\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u304d\u308c\u3044\u306b\u8a2d\u5b9a\u3057\u3001\u3059\u3079\u3066\u306e\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3067\u4e00\u8cab\u6027\u306e\u3042\u308b\u5fdc\u7b54\u3092\u3059\u308b\u3053\u3068\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u5b58\u5728\u3057\u306a\u3044\u30bf\u30fc\u30b2\u30c3\u30c8\u3092\u4e0d\u5fc5\u8981\u306b\u5f85\u3064\u3053\u3068\u3092\u9632\u3044\u3067\u3044\u308b\u3002.<\/p>\n\n<h2>\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u3068\u30d7\u30ed\u30c8\u30b3\u30eb\uff1aEDNS(0)\u3001UDP\/TCP\u3001DoT\/DoH<\/h2>\n<p>DNSSEC\u3084\u9577\u3044TXT\u30ec\u30b3\u30fc\u30c9\u306e\u3088\u3046\u306a\u5927\u304d\u306aDNS\u30ec\u30b9\u30dd\u30f3\u30b9\u306b\u306f\u3001\u4ee5\u4e0b\u306e\u3082\u306e\u304c\u5fc5\u8981\u3067\u3059\u3002 <strong>EDNS(0)<\/strong>. .\u79c1\u306f\u3001IP\u306e\u65ad\u7247\u5316\u3092\u907f\u3051\u308b\u305f\u3081\u306b\u3001\u5e38\u8b58\u7684\u306aUDP\u30d0\u30c3\u30d5\u30a1\u30b5\u30a4\u30ba\uff08\u4f8b\u3048\u30701232\u30d0\u30a4\u30c8\uff09\u306b\u6ce8\u610f\u3092\u6255\u3063\u3066\u3044\u308b\u3002\u305d\u308c\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u30d1\u30b1\u30c3\u30c8\u304c\u5927\u304d\u3059\u304e\u308b\u5834\u5408\u3001\u30b5\u30fc\u30d0\u30fc\u306f \u201eTC=1 \u201c\u306e\u30b7\u30b0\u30ca\u30eb\u3092\u9001\u308a\u3001\u30ea\u30be\u30eb\u30d0\u306f\u6b21\u306e\u3088\u3046\u306b\u5207\u308a\u66ff\u308f\u308b\u3002 <strong>TCP<\/strong>. .\u5b9f\u969b\u306b\u306f\u3001\u4fdd\u5b88\u7684\u306aEDNS\u8a2d\u5b9a\u306fUDP\u7d4c\u7531\u306e\u6210\u529f\u7387\u3092\u9ad8\u3081\u3001\u4e0d\u5fc5\u8981\u306a\u518d\u9001\u3092\u9632\u304e\u307e\u3059\u3002\u307e\u305f\u3001\u201eAdditional \u201c\u30a8\u30f3\u30c8\u30ea\u306e\u6570\u3092\u5c11\u306a\u304f\u3057\u3001\u4f59\u8a08\u306a\u30c7\u30fc\u30bf\u3092\u907f\u3051\u308b\u3053\u3068\u3067\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u304c\u9078\u629e\u3057\u305f\u30b5\u30a4\u30ba\u306b\u78ba\u5b9f\u306b\u53ce\u307e\u308b\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n<p>\u6697\u53f7\u5316\u3055\u308c\u305f\u30d1\u30b9 <strong>DNS-over-TLS (DoT)<\/strong> \u305d\u3057\u3066 <strong>DNS-over-HTTPS (DoH)<\/strong> \u304c\u91cd\u8981\u6027\u3092\u5897\u3057\u3066\u3044\u308b\u3002\u3053\u308c\u3089\u306f\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3092\u5411\u4e0a\u3055\u305b\u308b\u304c\u3001\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306b\u3088\u308b\u5f85\u3061\u6642\u9593\u3092\u767a\u751f\u3055\u305b\u308b\u3002\u79c1\u306f\u3001\u30ad\u30fc\u30d7\u30a2\u30e9\u30a4\u30d6\u3001\u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u518d\u958b\u3001\u30ea\u30ab\u30fc\u30b5\u306e\u9069\u5207\u306a\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u5024\u3092\u6709\u52b9\u306b\u3059\u308b\u3053\u3068\u3067\u3001\u3053\u308c\u3092\u8efd\u6e1b\u3057\u3066\u3044\u308b\u3002HTTP\/2\u7d4c\u7531\u306e\u591a\u91cd\u5316\u306f\u3001DoH\u306e\u63a5\u7d9a\u30b3\u30b9\u30c8\u3092\u524a\u6e1b\u3057\u307e\u3059\u3002\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306e\u5834\u5408\u3001\u3053\u308c\u306f\u6b21\u306e\u3053\u3068\u3092\u610f\u5473\u3059\u308b\uff1a\u6697\u53f7\u5316\u306f\u53ef\u80fd\u3060\u304c\u3001\u89e3\u6c7a\u304c\u9045\u304f\u306a\u3089\u306a\u3044\u3088\u3046\u306b\u63a5\u7d9a\u306e\u7dad\u6301\u3068\u5bb9\u91cf\u8a08\u753b\u306b\u6ce8\u610f\u3092\u6255\u3046\u3053\u3068\u3002.<\/p>\n\n<h2>\u9069\u5207\u306aTTL\u3092\u9078\u629e\u3057\u3001\u843d\u3068\u3057\u7a74\u3092\u907f\u3051\u308b<\/h2>\n<p>\u4edd <strong>TTL<\/strong> \u306f\u3001\u30ea\u30be\u30eb\u30d0\u304c\u5fdc\u7b54\u3092\u30d0\u30c3\u30d5\u30a1\u30ea\u30f3\u30b0\u3059\u308b\u6642\u9593\u3092\u6c7a\u5b9a\u3057\u3001\u305d\u306e\u7d50\u679c\u3001\u5909\u66f4\u304c\u3069\u308c\u3060\u3051\u65e9\u304f\u4e16\u754c\u4e2d\u3067\u53ef\u8996\u5316\u3055\u308c\u308b\u304b\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u5b89\u5b9a\u3057\u305f\u30ec\u30b3\u30fc\u30c9\u306e\u5834\u5408\u3001\u79c1\u306f\u30af\u30a8\u30ea\u3092\u6e1b\u3089\u3057\u3001\u5fdc\u7b54\u6642\u9593\u3092\u30b9\u30e0\u30fc\u30ba\u306b\u3059\u308b\u305f\u3081\u306b\u9ad8\u3044TTL\uff08\u4f8b\u3048\u30701\uff5e24\u6642\u9593\uff09\u3092\u8a2d\u5b9a\u3059\u308b\u3002\u8a08\u753b\u7684\u306aIP\u5909\u66f4\u306e\u524d\u306b\u306f\u3001\u4f55\u65e5\u3082\u524d\u306bTTL\u3092300\uff5e900\u79d2\u306b\u4e0b\u3052\u3066\u3001\u5207\u308a\u66ff\u3048\u304c\u30b9\u30e0\u30fc\u30ba\u306b\u9032\u3080\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u79fb\u884c\u304c\u6210\u529f\u3057\u305f\u5f8c\u306f\u3001TTL\u306e\u5024\u3092\u518d\u3073\u5927\u304d\u304f\u3057\u3066\u3001IP\u30a2\u30c9\u30ec\u30b9\u306e\u5909\u66f4\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u307e\u3059\u3002 <strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/strong> \u3092\u5b89\u5b9a\u3055\u305b\u308b\u3002\u3053\u306e\u6226\u8853\u3092\u898b\u843d\u3068\u3059\u3068\u3001\u300cTTL\u306e\u7f60\u300d\u306b\u9665\u3063\u3066\u3057\u307e\u3046\u3002 <a href=\"https:\/\/webhosting.de\/ja\/dns-ttl-%e3%81%8c%e9%96%93%e9%81%95%e3%81%a3%e3%81%a6%e3%81%84%e3%82%8b%e3%83%91%e3%83%95%e3%82%a9%e3%83%bc%e3%83%9e%e3%83%b3%e3%82%b9%e3%81%8c%e4%bc%9d%e6%92%ad%e3%81%ab%e3%82%b3%e3%82%b9%e3%83%88\/\">TTL\u306e\u8a2d\u5b9a\u304c\u6b63\u3057\u304f\u306a\u3044<\/a>, \u3053\u308c\u306f\u3001\u6642\u4ee3\u9045\u308c\u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u304c\u3069\u308c\u3060\u3051\u306e\u671f\u9593\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u8aa4\u8a98\u5c0e\u3057\u3066\u304d\u305f\u304b\u3092\u793a\u3059\u3082\u306e\u3060\u3002.<\/p>\n<p>\u3088\u304f\u4f7f\u3046\u306e\u306f\u76ee\u76db\u308a\u4ed8\u304d <strong>TTL\u6226\u7565<\/strong>\u30af\u30ea\u30c6\u30a3\u30ab\u30eb\u306a\u30d5\u30ed\u30f3\u30c8\u30c9\u30a2\u30fb\u30ec\u30b3\u30fc\u30c9\u306b\u306f\u9069\u5ea6\u306a\u5024\uff085\uff5e30\u5206\uff09\u304c\u4e0e\u3048\u3089\u308c\u3001\u3088\u308a\u6df1\u3044\u4f9d\u5b58\u95a2\u4fc2\uff08\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30fb\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306a\u3069\uff09\u306b\u306f\u3088\u308a\u9ad8\u3044TTL\u304c\u4e0e\u3048\u3089\u308c\u308b\u3002\u3053\u3046\u3059\u308b\u3053\u3068\u3067\u3001\u5185\u90e8\u3067\u4e0d\u8981\u306a\u8ca0\u8377\u3092\u767a\u751f\u3055\u305b\u308b\u3053\u3068\u306a\u304f\u3001\u5207\u308a\u66ff\u3048\u3092\u5916\u90e8\u3067\u8fc5\u901f\u306b\u4f1d\u64ad\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002TTL\u30d7\u30ea\u30d5\u30e9\u30a4\u30c8\u300d\u306f\u3001\u30ed\u30fc\u30eb\u30a2\u30a6\u30c8\u306b\u304a\u3044\u3066\u305d\u306e\u4fa1\u5024\u304c\u8a3c\u660e\u3055\u308c\u3066\u3044\u308b\uff1a\u4e8b\u524d\u306bTTL\u3092\u4e0b\u3052\u3001\u65b0\u3057\u3044\u7d4c\u8def\u3092\u30c6\u30b9\u30c8\u3057\u3001\u5207\u308a\u66ff\u3048\u3092\u884c\u3044\u3001\u89b3\u5bdf\u3057\u305f\u5f8c\u3001\u518d\u3073TTL\u3092\u4e0a\u3052\u308b\u3002\u3053\u306e\u6642\u70b9\u3067\u898f\u5f8b\u3042\u308b\u30a2\u30d7\u30ed\u30fc\u30c1\u3092\u3068\u308b\u3053\u3068\u3067\u3001\u53e4\u304f\u306a\u3063\u305f\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u84c4\u7a4d\u3084\u4e0d\u660e\u78ba\u306a\u30a8\u30e9\u30fc\u30d1\u30bf\u30fc\u30f3\u3092\u907f\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/01\/dns_architektur_hosting_4732.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30b0\u30ed\u30fc\u30d0\u30eb\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\uff1a\u30a8\u30cb\u30fc\u30ad\u30e3\u30b9\u30c8\u3001GeoDNS\u3001CDN<\/h2>\n<p>\u30ef\u30fc\u30eb\u30c9\u30ef\u30a4\u30c9 <strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/strong> \u306f\u3001\u30e6\u30fc\u30b6\u30fc\u3068\u6a29\u5a01\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e\u9593\u306e\u8fd1\u3055\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002\u30a8\u30cb\u30fc\u30ad\u30e3\u30b9\u30c8\u306f\u591a\u304f\u306e\u5834\u6240\u3067\u540c\u3058IP\u3092\u516c\u958b\u3059\u308b\u305f\u3081\u3001\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306f\u81ea\u52d5\u7684\u306b\u6700\u3082\u8fd1\u3044\u30ce\u30fc\u30c9\u3092\u9078\u629e\u3057\u307e\u3059\u3002GeoDNS\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u3092\u7279\u306b\u5730\u57df\u306e\u30ea\u30bd\u30fc\u30b9\u306b\u8a98\u5c0e\u3059\u308b\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u30d9\u30fc\u30b9\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u3067\u3053\u308c\u3092\u88dc\u5b8c\u3057\u307e\u3059\u3002\u79c1\u306f\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u5909\u66f4\u3092\u9045\u304f\u3059\u308b\u3053\u3068\u306a\u304f\u914d\u4fe1\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u3088\u3046\u306b\u3001\u3053\u308c\u3089\u306e\u6226\u7565\u3092\u8ce2\u660e\u306aTTL\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u306e\u304c\u597d\u304d\u3060\u3002\u3088\u308a\u6df1\u304f\u77e5\u308a\u305f\u3044\u5834\u5408\u306f <a href=\"https:\/\/webhosting.de\/ja\/anycast-%e5%af%be-geodns-%e3%82%b9%e3%83%9e%e3%83%bc%e3%83%88-dns-%e3%83%ab%e3%83%bc%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0%e3%81%ae%e6%af%94%e8%bc%83-2025\/\">Anycast \u5bfe GeoDNS<\/a> \u3092\u9078\u629e\u3057\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u30d1\u30bf\u30fc\u30f3\u306b\u3088\u3063\u3066\u3001\u3088\u308a\u52b9\u7387\u7684\u306a <strong>\u30eb\u30fc\u30c8<\/strong>.<\/p>\n<p>\u3092\u5b9a\u671f\u7684\u306b\u30c6\u30b9\u30c8\u3057\u3066\u3044\u308b\u3002 <strong>\u30ad\u30e3\u30c3\u30c1\u30e1\u30f3\u30c8<\/strong> \u3064\u307e\u308a\u3001\u3069\u306e\u30e6\u30fc\u30b6\u30fc\u5730\u57df\u304c\u3069\u306e\u5834\u6240\u306b\u30c9\u30c3\u30ad\u30f3\u30b0\u3059\u308b\u304b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u5c0f\u3055\u306aBGP\u306e\u5909\u66f4\u3001\u65b0\u3057\u3044\u30d4\u30a2\u30ea\u30f3\u30b0\u5951\u7d04\u3001\u307e\u305f\u306f\u969c\u5bb3\u306f\u5272\u308a\u5f53\u3066\u3092\u30b7\u30d5\u30c8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30d8\u30eb\u30b9\u30c1\u30a7\u30c3\u30af\u306f\u3044\u3064\u30ed\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u30eb\u30fc\u30c8\u3092\u64a4\u56de\u3059\u308b\u304b\u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002GeoDNS\u3067\u306f\u6b21\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3057\u307e\u3059\u3002 <strong>\u660e\u78ba\u306a\u5730\u57df<\/strong> (\u5927\u9678\u3084\u5c0f\u5730\u57df\u306a\u3069\uff09\u3001\u305d\u3057\u3066\u305d\u3053\u3067\u30ec\u30b9\u30dd\u30f3\u30b9\u30bf\u30a4\u30e0\u304c\u672c\u5f53\u306b\u6539\u5584\u3055\u308c\u308b\u304b\u3092\u6e2c\u5b9a\u3059\u308b\u3002\u7d30\u304b\u3059\u304e\u308b\u30eb\u30fc\u30eb\u306f\u8907\u96d1\u3055\u3092\u5897\u3057\u3001\u4e00\u8cab\u6027\u3092\u640d\u306a\u3046\u3002.<\/p>\n\n<h2>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u56de\u5fa9\u529b\uff1aDNSSEC\u3001\u30ec\u30fc\u30c8\u5236\u9650\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u6226\u7565<\/h2>\n<p>\u306a\u3057 <strong>\u30c7\u30a3\u30ca\u30bb\u30c3\u30af<\/strong> \u305d\u306e\u305f\u3081\u3001\u7f72\u540d\u4ed8\u304d\u30be\u30fc\u30f3\u3092\u30c7\u30d5\u30a9\u30eb\u30c8\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u308b\u3002\u6a29\u5a01\u30b5\u30fc\u30d0\u30fc\u306e\u30ec\u30fc\u30c8\u5236\u9650\u306f\u3001\u7279\u306b\u653b\u6483\u3084\u30dc\u30c3\u30c8\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306e\u969b\u306b\u3001\u30af\u30a8\u30ea\u306e\u6d2a\u6c34\u3092\u6291\u5236\u3059\u308b\u3002\u518d\u5e30\u7684\u30ea\u30be\u30eb\u30d0\u306b\u306f\u5197\u9577\u6027\u3068\u660e\u78ba\u306a\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u304c\u5fc5\u8981\u3067\u3059\u3002\u30ea\u30be\u30eb\u30d0\u304c\u5fc5\u8981\u306a\u30c7\u30fc\u30bf\u306e\u307f\u3092\u6e21\u3057\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u304c\u7dad\u6301\u3055\u308c\u308b\u3088\u3046\u306b\u3001QNAME\u3092\u6700\u5c0f\u5316\u3059\u308b\u3053\u3068\u3082\u63a8\u5968\u3055\u308c\u308b\u3002\u8ce2\u3044 <strong>\u30ad\u30e3\u30c3\u30b7\u30e5<\/strong>-\u4f8b\u3048\u3070\u3001\u30ec\u30b3\u30fc\u30c9\u306e\u7a2e\u985e\u3054\u3068\u306bTTL\u3092\u6bb5\u968e\u7684\u306b\u8a2d\u5b9a\u3059\u308b\u306a\u3069\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u306b\u3088\u3063\u3066\u3001\u5b89\u5168\u6027\u3068\u30b9\u30d4\u30fc\u30c9\u304c\u76f8\u53cd\u3059\u308b\u3053\u3068\u304c\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u3002.<\/p>\n<p>\u5805\u7262\u306a\u914d\u5099\u306e\u305f\u3081\u306b\u3001\u79c1\u306f\u4ee5\u4e0b\u306e\u70b9\u306b\u3082\u6ce8\u610f\u3092\u6255\u3063\u3066\u3044\u308b\u3002 <strong>DNS\u30af\u30c3\u30ad\u30fc<\/strong> \u3068\u30af\u30a8\u30ea\u30fc\u30ec\u30fc\u30c8\u5236\u9650\uff08RRL\uff09\u3092\u6a29\u5a01\u30b5\u30fc\u30d0\u30fc\u306b\u8a2d\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u30ea\u30d5\u30ec\u30af\u30b7\u30e7\u30f3\u653b\u6483\u3068\u5897\u5e45\u653b\u6483\u3092\u8efd\u6e1b\u3057\u3066\u3044\u308b\u3002\u30ea\u30ab\u30fc\u30b5\u306b\u306f\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0 <strong>\u6700\u5927TTL<\/strong> \u305d\u3057\u3066 <strong>\u6700\u5c0fTTL<\/strong>, \u305d\u306e\u305f\u3081\u3001\u6d77\u5916\u30be\u30fc\u30f3\u306e\u8a2d\u5b9a\u30df\u30b9\u304c\u6975\u7aef\u306a\u30ad\u30e3\u30c3\u30b7\u30e5\u6642\u9593\u306b\u3064\u306a\u304c\u3089\u306a\u3044\u3002SERVFAIL\u306e\u30d4\u30fc\u30af\u3092\u76e3\u8996\u3059\u308b\u3053\u3068\u306f\u3001\u7f72\u540d\u4ed8\u304d\u30be\u30fc\u30f3\u306b\u3068\u3063\u3066\u7279\u306b\u6709\u610f\u7fa9\u3067\u3042\u308b\uff1a\u3053\u308c\u306f\u591a\u304f\u306e\u5834\u5408\u3001\u671f\u9650\u5207\u308c\u306e\u7f72\u540d\u3001\u4e0d\u5b8c\u5168\u306a\u30c1\u30a7\u30fc\u30f3\u3001\u3042\u308b\u3044\u306f\u89aa\u306eDS\u30ec\u30b3\u30fc\u30c9\u306e\u6b20\u843d\u304c\u539f\u56e0\u3067\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/01\/dns-architektur-hosting-visual-9473.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30be\u30fc\u30f3\u30c7\u30b6\u30a4\u30f3\u3068\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\uff1a\u30d2\u30c9\u30a5\u30f3\u30de\u30b9\u30bf\u30fc\u3001\u30b7\u30ea\u30a2\u30eb\u3001IXFR\/AXFR<\/h2>\n<p>\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306a\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u306e\u305f\u3081\u306b\u3001\u79c1\u306f\u66f8\u304d\u8fbc\u307f\u3092\u5206\u3051\u3066\u3044\u308b\u3002 <strong>\u30d2\u30c9\u30a5\u30f3\u30fb\u30de\u30b9\u30bf\u30fc<\/strong> \u4e00\u822c\u306b\u30a2\u30af\u30bb\u30b9\u53ef\u80fd\u306a\u6a29\u5a01\u3042\u308b\u30b9\u30ec\u30fc\u30d6\/\u30bb\u30ab\u30f3\u30c0\u30ea\u304b\u3089\u3002\u79c1\u306f\u5909\u66f4\u3092 <strong>\u901a\u77e5<\/strong> \u305d\u3057\u3066\u3001\u53ef\u80fd\u3067\u3042\u308c\u3070 <strong>IXFR<\/strong> AXFR\u306e\u5b8c\u5168\u306a\u8ee2\u9001\u306e\u4ee3\u308f\u308a\u306b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5e2f\u57df\u5e45\u304c\u524a\u6e1b\u3055\u308c\u3001\u66f4\u65b0\u304c\u9ad8\u901f\u5316\u3055\u308c\u308b\u3002. <strong>TSIG<\/strong> \u64cd\u4f5c\u304b\u3089\u79fb\u7c4d\u3092\u5b88\u308b\u3002\u91cd\u8981\u306a\u306e\u306f\u5358\u8abf\u306a <strong>SOA\u30b7\u30ea\u30a2\u30eb<\/strong> \u305d\u3057\u3066\u3001\u3059\u3079\u3066\u306e\u30bb\u30ab\u30f3\u30c0\u30ea\u30fc\u304c\u6642\u9593\u901a\u308a\u306b\u4e00\u8cab\u3057\u3066\u66f4\u65b0\u3055\u308c\u308b\u3088\u3046\u3001\u6642\u9593\u306e\u540c\u671f\u3092\u3068\u308b\u3002\u79c1\u306f\u4e16\u754c\u4e2d\u306e\u30b7\u30ea\u30a2\u30eb\u3092\u6bd4\u8f03\u3057\u3001\u30c7\u30fc\u30bf\u30d1\u30b9\u3092\u76e3\u8996\u3059\u308b\u3053\u3068\u3067\u3001\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u9045\u308c\u3092\u65e9\u3044\u6bb5\u968e\u3067\u8a8d\u8b58\u3057\u3066\u3044\u308b\u3002.<\/p>\n<p>\u79c1\u306f\u610f\u8b58\u7684\u306b\u3001\u6b21\u306e\u3088\u3046\u306a\u8a08\u753b\u3092\u7acb\u3066\u3066\u3044\u308b\u3002 <strong>\u30b8\u30c3\u30bf\u30fc<\/strong> \u3059\u3079\u3066\u306e\u30bb\u30ab\u30f3\u30c0\u30ea\u30fc\u304c\u540c\u6642\u306b\u8ca0\u8377\u306e\u30d4\u30fc\u30af\u3092\u767a\u751f\u3055\u305b\u306a\u3044\u3088\u3046\u306b\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u30fb\u30a6\u30a3\u30f3\u30c9\u30a6\u306b\uff08\u4f8b\u3048\u3070\u3001\u30ea\u30ed\u30fc\u30c9\u6642\u9593\u306e\u30e9\u30f3\u30c0\u30e0\u5316\uff09\u3002\u307e\u305f\u3001\u660e\u78ba\u306a\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u6226\u7565\u3082\u3042\u308b\u3002\u65b0\u3057\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u30a8\u30e9\u30fc\u304c\u3042\u3063\u3066\u3082\u3001\u53e4\u3044\u30be\u30fc\u30f3\u306f\u5229\u7528\u53ef\u80fd\u306a\u307e\u307e\u3067\u3042\u308b\u3002\u3053\u306e\u3088\u3046\u306b\u3001\u5909\u66f4\u6642\u306e\u30b9\u30d4\u30fc\u30c9\u3068\u904b\u7528\u6642\u306e\u5b89\u5b9a\u6027\u3092\u4e21\u7acb\u3055\u305b\u3066\u3044\u308b\u3002.<\/p>\n\n<h2>\u5b9f\u8df5\u30ac\u30a4\u30c9\u79fb\u884c\u3001\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9<\/h2>\n<p>\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u524d\u306b\u3001\u79c1\u306f <strong>TTL<\/strong> \u79c1\u306f\u3001\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u914d\u4e0b\u306e\u65b0\u3057\u3044\u30ea\u30bd\u30fc\u30b9\u3092\u4e26\u884c\u3057\u3066\u30c6\u30b9\u30c8\u3057\u3001\u30d8\u30eb\u30b9\u30c1\u30a7\u30c3\u30af\u3067\u8a31\u53ef\u304c\u51fa\u305f\u5834\u5408\u306e\u307f\u5207\u308a\u66ff\u3048\u3092\u884c\u3046\u3002\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u306e\u30b7\u30ca\u30ea\u30aa\u3067\u306f\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u306b\u95a2\u9023\u3059\u308b\u30ec\u30b3\u30fc\u30c9\u306eTTL\u3092\u77ed\u304f\u3057\u3066\u304a\u304d\u3001\u30ea\u30be\u30eb\u30d0\u304c\u3059\u3050\u306b\u4ee3\u66ff\u30b7\u30b9\u30c6\u30e0\u3092\u6307\u5b9a\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u3066\u304a\u304f\u3002\u53e4\u3044\u30ec\u30b3\u30fc\u30c9\u3001\u5fd8\u308c\u53bb\u3089\u308c\u305f\u30b0\u30eb\u30fc\u30fb\u30a8\u30f3\u30c8\u30ea\u30fc\u3001\u904e\u53bb\u306eNS\u30dd\u30a4\u30f3\u30bf\u304c\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u6319\u52d5\u3092\u6b6a\u3081\u308b\u3002TTL\u3092\u8abf\u6574\u3057\u3001\u30be\u30fc\u30f3\u3092\u691c\u8a3c\u3057\u3001\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u66f4\u65b0\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u306f\u3001\u5b9a\u7fa9\u3055\u308c\u305f\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u8a08\u753b\u306b\u3088\u3063\u3066\u6c7a\u307e\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a <strong>\u30a2\u30af\u30bb\u30b7\u30d3\u30ea\u30c6\u30a3<\/strong> \u5b89\u5b9a - \u5909\u5316\u306e\u6700\u4e2d\u3067\u3082\u3002.<\/p>\n<p>\u79c1\u306f\u6642\u5dee\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0\u3082\u4f7f\u3063\u3066\u3044\u308b\u3002 <strong>\u52a0\u91cdDNS<\/strong> \u65b0\u3057\u3044\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e\u5236\u5fa1\u3055\u308c\u305f\u7acb\u3061\u4e0a\u3052\u306e\u305f\u3081\u306b\u3002\u5c0f\u3055\u306a\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u30b7\u30a7\u30a2(\u4f8b\u3048\u30705-10 %)\u306f\u3001\u5927\u591a\u6570\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u8ca0\u62c5\u3092\u304b\u3051\u308b\u3053\u3068\u306a\u304f\u3001\u65e9\u671f\u306e\u30b7\u30b0\u30ca\u30eb\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u30d2\u30b9\u30c6\u30ea\u30b7\u30b9\u3001\u30af\u30fc\u30eb\u30c0\u30a6\u30f3\u6642\u9593\u3001\u5b89\u5b9a\u6027\u306e\u6700\u5c0f\u9650\u306e\u8a3c\u660e\u306b\u3088\u308a\u3001\u30ea\u30be\u30eb\u30d0\u3068\u30e6\u30fc\u30b6\u306e\u4e21\u65b9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u30d0\u30bf\u3064\u304d\u304b\u3089\u5b88\u308a\u307e\u3059\u3002.<\/p>\n\n<h2>DNS\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30fb\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6307\u6a19\u3068\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/h2>\n<p>\u5b9c\u3057\u3044 <strong>\u6307\u6a19<\/strong> DNS\u30ec\u30b9\u30dd\u30f3\u30b9\u306ep50\/p95\/p99\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u3092\u3001\u5730\u57df\u3068\u30ec\u30b3\u30fc\u30c9\u30bf\u30a4\u30d7\u5225\u306b\u8ffd\u8de1\u3057\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u518d\u5e30\u30ea\u30be\u30eb\u30d0\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8\u30ec\u30fc\u30c8\u3001NXD\u3068SERVFAIL\u306e\u30ec\u30fc\u30c8\u3001\u30af\u30a8\u30ea\u30fc\u30d4\u30fc\u30af\u306e\u50be\u5411\u3082\u30e2\u30cb\u30bf\u30fc\u3057\u3066\u3044\u307e\u3059\u3002\u8907\u6570\u306e\u5834\u6240\u304b\u3089\u306e\u5408\u6210\u30c6\u30b9\u30c8\u306b\u3088\u308a\u3001\u9045\u3044TLD\u307e\u305f\u306f\u6a29\u5a01\u30d1\u30b9\u3092\u8a8d\u8b58\u3057\u307e\u3059\u3002\u8abf\u6574\u524d\u5f8c\u306e\u30af\u30a8\u30ea\u3068\u30ec\u30b9\u30dd\u30f3\u30b9\u30bf\u30a4\u30e0\u3092\u6bd4\u8f03\u3059\u308b\u3053\u3068\u3067\u3001TTL\u306e\u5909\u66f4\u3092\u6e2c\u5b9a\u3057\u307e\u3059\u3002\u30c7\u30fc\u30bf\u306b\u3088\u3063\u3066\u306e\u307f\u3001\u79c1\u306f\u4fe1\u983c\u3067\u304d\u308b <strong>\u6c7a\u65ad<\/strong> \u6b21\u306e\u6700\u9069\u5316\u306e\u305f\u3081\u306b\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/01\/dns_architektur_buero_3892.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>SLO\u3001\u80fd\u529b\u3001\u904b\u55b6\uff1a\u76ee\u6a19\u5024\u304b\u3089\u4e88\u7b97\u307e\u3067<\/h2>\n<p>\u660e\u78ba\u306a\u5b9a\u7fa9 <strong>SLO<\/strong> DNS\u306e\u89e3\u50cf\u5ea6\u3092\u5730\u57df\u3054\u3068\u306b \u201ep95 &lt; 20 ms \u201c\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u3001\u305d\u3053\u304b\u3089\u6b21\u306e\u3088\u3046\u306b\u5c0e\u304d\u51fa\u3059\u3002 <strong>\u30a8\u30e9\u30fc\u4e88\u7b97<\/strong> \u304b\u3089\u3002\u30d0\u30fc\u30f3\u30ec\u30fc\u30c8\u30a2\u30e9\u30fc\u30c8\u306f\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u3084\u30a8\u30e9\u30fc\u7387\u304c\u4e88\u7b97\u3092\u65e9\u304f\u4f7f\u3044\u5207\u3063\u305f\u5834\u5408\u306b\u8b66\u544a\u3059\u308b\u3002\u5bb9\u91cf\u9762\u3067\u306f\u3001\u983b\u5ea6\u306e\u9ad8\u3044\u540d\u524d\u304c\u6c38\u4e45\u306b\u30e1\u30e2\u30ea\u306b\u6b8b\u308b\u3088\u3046\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u30b5\u30a4\u30ba\u3092\u6c7a\u3081\u308b\u3002\u5c0f\u3055\u3059\u304e\u308b\u30ad\u30e3\u30c3\u30b7\u30e5\u30b5\u30a4\u30ba\u306f\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u3092\u5897\u52a0\u3055\u305b\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u30a2\u30c3\u30d7\u30b9\u30c8\u30ea\u30fc\u30e0\u306eQPS\u3092\u500d\u5897\u3055\u305b\u308b\u3002\u524d\u63d0\u6761\u4ef6\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3060\u3002 <strong>\u30ea\u30bd\u30fc\u30b9<\/strong> (RAM\u3001CPU\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30afI\/O)\u3068\u3001UDP\u30d0\u30c3\u30d5\u30a1\u306e\u305f\u3081\u306e\u4fdd\u5b88\u7684\u306a\u30ab\u30fc\u30cd\u30eb\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30d4\u30fc\u30af\u304c\u30d1\u30b1\u30c3\u30c8\u30ed\u30b9\u306b\u3064\u306a\u304c\u3089\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3002.<\/p>\n<p>\u7a3c\u50cd\u4e2d <strong>\u7a4d\u6975\u6027<\/strong> \u30aa\u30d5\uff1a\u5177\u4f53\u7684\u306b\u306f\u3001\u5927\u898f\u6a21\u306a\u30ea\u30ea\u30fc\u30b9\u306e\u305f\u3081\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30a6\u30a9\u30fc\u30e0\u30a2\u30c3\u30d7\u3057\uff08\u4eba\u6c17\u306e\u3042\u308b\u540d\u524d\u306e\u30d7\u30e9\u30a4\u30df\u30f3\u30b0\uff09\u3001\u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u30d4\u30fc\u30af\u6642\u4ee5\u5916\u306eTTL\u5909\u66f4\u3092\u8a08\u753b\u3057\u3001\u30ea\u30be\u30eb\u30d0\u3084\u6a29\u5a01\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u306e\u305f\u3081\u306b\u30d7\u30ec\u30a4\u30d6\u30c3\u30af\u3092\u6e96\u5099\u3057\u3066\u304a\u304f\u3002\u5b9a\u671f\u7684\u306a\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u30a2\u30c3\u30d7\u30b0\u30ec\u30fc\u30c9\u306f\u3001\u3088\u308a\u512a\u308c\u305f\u30d1\u30b1\u30c3\u30c8\u30d1\u30fc\u30b5\u30fc\u3001\u3088\u308a\u6700\u65b0\u306eTLS\u30b9\u30bf\u30c3\u30af\u3001\u3088\u308a\u52b9\u7387\u7684\u306a\u30ad\u30e3\u30c3\u30b7\u30e5\u69cb\u9020\u306a\u3069\u3092\u901a\u3058\u3066\u3001\u30ae\u30e3\u30c3\u30d7\u3092\u57cb\u3081\u3001\u76ee\u306b\u898b\u3048\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u5411\u4e0a\u3092\u3082\u305f\u3089\u3059\u3053\u3068\u304c\u591a\u3044\u3002.<\/p>\n\n<h2>\u8868\uff1aTTL\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3068\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30fb\u30b7\u30ca\u30ea\u30aa<\/h2>\n<p>\u7c21\u5358\u306a\u30aa\u30ea\u30a8\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u306e\u305f\u3081\u306b\u3001\u5178\u578b\u7684\u306a\u3082\u306e\u3092\u307e\u3068\u3081\u3066\u307f\u305f\u3002 <strong>TTL<\/strong>-\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30fb\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3067\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u5024\u306f\u51fa\u767a\u70b9\u3068\u3057\u3066\u6a5f\u80fd\u3057\u3001\u305d\u306e\u5f8c\u3001\u8ca0\u8377\u3001\u8010\u969c\u5bb3\u6027\u3001\u5909\u66f4\u983b\u5ea6\u306b\u57fa\u3065\u3044\u3066\u5fae\u8abf\u6574\u3055\u308c\u308b\u3002\u9ad8\u5ea6\u306b\u5206\u6563\u3055\u308c\u305f\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u5834\u5408\u3001\u9759\u7684\u306a\u30b3\u30f3\u30c6\u30f3\u30c4\u306b\u306f\u9ad8\u3044TTL\u3092\u3001\u52d5\u7684\u306a\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u306b\u306f\u4e2d\u7a0b\u5ea6\u306e\u5024\u3092\u6df7\u5728\u3055\u305b\u308b\u3053\u3068\u304c\u3057\u3070\u3057\u3070\u6709\u52b9\u3067\u3059\u3002CNAME\u30c1\u30a7\u30fc\u30f3\u304c\u610f\u56f3\u305b\u305a\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u6709\u52b9\u6642\u9593\u3092\u5ef6\u9577\u3057\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u307e\u305f <strong>SOA<\/strong>-\u30d1\u30e9\u30e1\u30fc\u30bf\uff08\u4f8b\uff1a\u6700\u5c0f\/\u8ca0\u306eTTL\uff09\u306f\u3001\u3042\u306a\u305f\u306e\u76ee\u7684\u306b\u5408\u81f4\u3057\u3066\u3044\u308b\u3002.<\/p>\n<table>\n  <thead>\n    <tr>\n      <th>\u30ec\u30b3\u30fc\u30c9\u30bf\u30a4\u30d7<\/th>\n      <th>\u63a8\u5968TTL<\/th>\n      <th>\u7528\u9014<\/th>\n      <th>\u30a8\u30e9\u30fc\u306e\u30ea\u30b9\u30af<\/th>\n      <th>\u30b3\u30e1\u30f3\u30c8<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>A\/AAAA<\/td>\n      <td>1\uff5e24\u6642\u9593\uff08\u79fb\u52d5\uff1a5\uff5e15\u5206\uff09<\/td>\n      <td>\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fcIP<\/td>\n      <td>\u5207\u308a\u66ff\u3048\u306e\u9045\u308c<\/td>\n      <td>\u79fb\u52d5\u524d\u306f\u6e1b\u3089\u3057\u3001\u79fb\u52d5\u5f8c\u306f\u5897\u3084\u3059<\/td>\n    <\/tr>\n    <tr>\n      <td>CNAME<\/td>\n      <td>30\u5206\uff5e4\u6642\u9593<\/td>\n      <td>CDN\u5272\u308a\u5f53\u3066<\/td>\n      <td>\u30ab\u30b9\u30b1\u30fc\u30c9\u9045\u5ef6<\/td>\n      <td>\u30c1\u30a7\u30fc\u30f3\u3092\u77ed\u304f\u3059\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td>MX<\/td>\n      <td>4-24 h<\/td>\n      <td>\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0<\/td>\n      <td>\u30e1\u30fc\u30eb\u8aa4\u9001\u4fe1<\/td>\n      <td>\u3081\u3063\u305f\u306b\u5909\u66f4\u3055\u308c\u306a\u3044\u3002<\/td>\n    <\/tr>\n    <tr>\n      <td>TXT<\/td>\n      <td>1-12 h<\/td>\n      <td>SPF\u3001DKIM\u3001\u691c\u8a3c<\/td>\n      <td>\u8a8d\u8a3c\u306e\u554f\u984c<\/td>\n      <td>\u5909\u66f4\u306e\u8a08\u753b\u3068\u30c6\u30b9\u30c8<\/td>\n    <\/tr>\n    <tr>\n      <td>NS<\/td>\n      <td>24-48 h<\/td>\n      <td>\u4ee3\u8868\u56e3<\/td>\n      <td>\u89e3\u50cf\u5ea6\u30a8\u30e9\u30fc<\/td>\n      <td>\u7279\u5b9a\u306e\u5909\u66f4\u306e\u307f\u3092\u884c\u3046<\/td>\n    <\/tr>\n    <tr>\n      <td>SRV<\/td>\n      <td>1-12 h<\/td>\n      <td>\u30b5\u30fc\u30d3\u30b9\u30fb\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8<\/td>\n      <td>\u7a7a\u304d\u304c\u306a\u3044<\/td>\n      <td>\u5065\u5eb7\u30c1\u30a7\u30c3\u30af\u3092\u7d44\u307f\u5408\u308f\u305b\u308b<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n<h2>\u3088\u304f\u3042\u308b\u30a8\u30e9\u30fc\u30d1\u30bf\u30fc\u30f3\u3068\u8fc5\u901f\u306a\u5bfe\u51e6\u6cd5<\/h2>\n<p>\u3044\u3064 <strong>\u30a8\u30cc\u30a8\u30c3\u30af\u30b9\u30c9\u30e1\u30a4\u30f3<\/strong> SERVFAIL\u306f\u591a\u304f\u306e\u5834\u5408\u3001\u59d4\u4efb\u3084\u30be\u30fc\u30f3\u306e\u30bf\u30a4\u30d7\u30df\u30b9\u304c\u6b63\u3057\u3044\u3053\u3068\u3092\u793a\u3059\u3002SERVFAIL\u306f\u591a\u304f\u306e\u5834\u5408\u3001\u671f\u9650\u5207\u308c\u306e\u7f72\u540d\u3084DS\u30ec\u30b3\u30fc\u30c9\u306e\u6b20\u843d\u306e\u3088\u3046\u306a DNSSEC\u306e\u554f\u984c\u3092\u793a\u3059\u3002\u6a29\u5a01\u30b5\u30fc\u30d0\u30fc\u9593\u306e\u4e00\u8cab\u6027\u306e\u306a\u3044\u5fdc\u7b54\u306f\u3001SOA\u5185\u306e\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u307e\u305f\u306f\u30b7\u30ea\u30a2\u30eb\u30a8\u30e9\u30fc\u3092\u793a\u3059\u3002\u4e88\u671f\u305b\u306c\u5f85\u3061\u6642\u9593\u306e\u6025\u5897\u306f\u3001\u3057\u3070\u3057\u3070\u4f4e\u3059\u304e\u308bTTL\u3068\u76f8\u95a2\u3057\u3001\u30ea\u30be\u30eb\u30d0\u306b\u983b\u7e41\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8cea\u554f\u3092\u5f37\u3044\u308b\u3002\u3053\u306e\u3088\u3046\u306a\u5834\u5408\u3001\u79c1\u306f\u7279\u306b <strong>\u30ad\u30e3\u30c3\u30b7\u30e5<\/strong>, \u79c1\u306fTTL\u3092\u9069\u5ea6\u306b\u5897\u3084\u3057\u3001\u30a4\u30f3\u30d5\u30e9\u3092\u6df1\u304f\u6398\u308a\u4e0b\u3052\u308b\u524d\u306b\u30ed\u30b0\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002.<\/p>\n<p>\u8a3a\u65ad\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u9055\u3044\u3082\u3042\u308b\u3002 <strong>\u30a8\u30cc\u30a8\u30c3\u30af\u30b9\u30c9\u30e1\u30a4\u30f3<\/strong> \u305d\u3057\u3066 <strong>NODATA<\/strong>, \u8907\u6570\u306e\u5730\u57df\u3001\u7570\u306a\u308b\u30ea\u30be\u30eb\u30d0\u30fc\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08ISP\u3001\u4f01\u696d\u30ea\u30be\u30eb\u30d0\u30fc\u3001\u30d1\u30d6\u30ea\u30c3\u30af\u30ea\u30ab\u30fc\u30b5\u30fc\uff09\u304b\u3089\u306e\u5fdc\u7b54\u3092\u6bd4\u8f03\u3059\u308b\u3002SOA\u30b7\u30ea\u30a2\u30eb\u304c\u7570\u306a\u308b\u5834\u5408\u3001\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u554f\u984c\u304c\u8003\u3048\u3089\u308c\u308b\u3002DNSKEY\u3068DS\u304c\u89aa\u3067\u4e00\u81f4\u3057\u306a\u3044\u5834\u5408\u3001DNSSEC\u304c\u30db\u30c3\u30c8\u30ea\u30fc\u30c9\u3067\u3042\u308b\u3002\u5fdc\u7b54\u304c\u5b9a\u671f\u7684\u306bTCP\u306b\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af\u3059\u308b\u5834\u5408\u3001\u79c1\u306f\u3053\u308c\u3092\u5927\u304d\u3059\u304e\u308b\u30d1\u30b1\u30c3\u30c8\u3001\u4e0d\u9069\u5207\u306aEDNS\u30b5\u30a4\u30ba\u3001\u307e\u305f\u306f\u30d1\u30b9\u306eMTU\u554f\u984c\u306e\u30b7\u30b0\u30ca\u30eb\u3068\u89e3\u91c8\u3059\u308b\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/01\/dns_architektur_hosting_3408.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u7ba1\u7406\u8005\u306e\u305f\u3081\u306e5\u5206\u9593\u30c1\u30a7\u30c3\u30af<\/h2>\n<p>\u79c1\u306f\u307e\u305a\u3001\u6b21\u306e\u3088\u3046\u306b\u8003\u3048\u3066\u3044\u308b\u3002 <strong>TTL<\/strong> \u6700\u3082\u91cd\u8981\u306aA\/AAA\u3068MX\u30ec\u30b3\u30fc\u30c9\u3092\u3001\u4eca\u5f8c\u6570\u9031\u9593\u306e\u5909\u66f4\u8a08\u753b\u3068\u6bd4\u8f03\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u4e16\u754c\u4e2d\u306e\u6a29\u5a01\u3042\u308b\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u306e\u5fdc\u7b54\u3092\u6bd4\u8f03\u3057\u3001\u65e9\u3044\u6bb5\u968e\u3067\u77db\u76fe\u3092\u898b\u3064\u3051\u307e\u3059\u3002\u6b21\u306b\u30012\uff5e3\u5730\u57df\u304b\u3089\u306e\u518d\u5e30\u7684\u306a\u89e3\u6c7a\u7b56\u3092\u6e2c\u5b9a\u3057\u3001\u5024\u3092\u5909\u66f4\u3059\u308b\u524d\u306ep95\u306e\u5f85\u3061\u6642\u9593\u3092\u8abf\u3079\u307e\u3059\u3002\u7d9a\u3044\u3066\u3001\u30ec\u30b8\u30b9\u30c8\u30ea\u904b\u7528\u8005\u3068DS\u30ec\u30b3\u30fc\u30c9\u3092\u542b\u3080\u30be\u30fc\u30f3\u306eDNSSEC\u30c6\u30b9\u30c8\u3092\u884c\u3046\u3002\u6700\u5f8c\u306b\u3001\u30d8\u30eb\u30b9\u30c1\u30a7\u30c3\u30af\u3068\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u30eb\u30fc\u30eb\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u30b5\u30a4\u30c8\u969c\u5bb3\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u306b <strong>\u30b9\u30a4\u30c3\u30c1\u30f3\u30b0<\/strong> \u306b\u9054\u3059\u308b\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2026\/01\/dns-hosting-rechenzentrum-4821.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068<\/h2>\n<p>\u8ce2\u3044 <strong>DNS\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3<\/strong> \u306f\u3001\u30af\u30ea\u30fc\u30f3\u306a\u30ad\u30e3\u30c3\u30b7\u30e5\u3001\u8abf\u548c\u3055\u308c\u305fTTL\u3001Anycast\u3084GeoDNS\u3092\u4ecb\u3057\u305f\u5de7\u5999\u306a\u30b0\u30ed\u30fc\u30d0\u30eb\u914d\u4fe1\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u30ea\u30be\u30eb\u30d0\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u7bc0\u7d04\u3057\u3001\u9ad8\u901f\u306a\u5fdc\u7b54\u3092\u63d0\u4f9b\u3057\u307e\u3059\u304c\u3001\u4f4e\u3059\u304e\u308bTTL\u306f\u4e0d\u5fc5\u8981\u306a\u8ca0\u8377\u3092\u767a\u751f\u3055\u305b\u307e\u3059\u3002DNSSEC\u3001\u30ec\u30fc\u30c8\u5236\u9650\u3001\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u306a\u3069\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u95a2\u9023\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u5e38\u306b\u30a2\u30af\u30c6\u30a3\u30d6\u306b\u3057\u3066\u304a\u304d\u3001\u653b\u6483\u3084\u8a2d\u5b9a\u30df\u30b9\u306b\u6c17\u3065\u304b\u308c\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u6e2c\u5b9a\u30c7\u30fc\u30bf\u306f\u3001\u79fb\u884c\u304b\u3089\u30a8\u30e9\u30fc\u5206\u6790\u306b\u81f3\u308b\u307e\u3067\u3001\u3042\u3089\u3086\u308b\u610f\u601d\u6c7a\u5b9a\u306e\u6307\u91dd\u3068\u306a\u308a\u3001\u884c\u52d5\u4e3b\u7fa9\u3092\u9632\u304e\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044 <strong>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/strong>, \u4e16\u754c\u4e2d\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u611f\u3058\u3066\u3044\u308b\u3053\u3068\u3002.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306eDNS\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u8aac\u660e\u3057\u307e\u3059\uff1a**DNS\u30ea\u30be\u30eb\u30d0**\u3001TTL\u306e\u8a2d\u5b9a\u3068\u6700\u9ad8\u306eDNS\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u305f\u3081\u306e\u30b0\u30ed\u30fc\u30d0\u30eb\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u3002.<\/p>","protected":false},"author":1,"featured_media":17179,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_crdt_document":"","inline_featured_image":false,"footnotes":""},"categories":[674],"tags":[],"class_list":["post-17186","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-web_hosting"],"acf":[],"_wp_attached_file":null,"_wp_attachment_metadata":null,"litespeed-optimize-size":null,"litespeed-optimize-set":null,"_elementor_source_image_hash":null,"_wp_attachment_image_alt":null,"stockpack_author_name":null,"stockpack_author_url":null,"stockpack_provider":null,"stockpack_image_url":null,"stockpack_license":null,"stockpack_license_url":null,"stockpack_modification":null,"color":null,"original_id":null,"original_url":null,"original_link":null,"unsplash_location":null,"unsplash_sponsor":null,"unsplash_exif":null,"unsplash_attachment_metadata":null,"_elementor_is_screenshot":null,"surfer_file_name":null,"surfer_file_original_url":null,"envato_tk_source_kit":null,"envato_tk_source_index":null,"envato_tk_manifest":null,"envato_tk_folder_name":null,"envato_tk_builder":null,"envato_elements_download_event":null,"_menu_item_type":null,"_menu_item_menu_item_parent":null,"_menu_item_object_id":null,"_menu_item_object":null,"_menu_item_target":null,"_menu_item_classes":null,"_menu_item_xfn":null,"_menu_item_url":null,"_trp_menu_languages":null,"rank_math_primary_category":null,"rank_math_title":null,"inline_featured_image":null,"_yoast_wpseo_primary_category":null,"rank_math_schema_blogposting":null,"rank_math_schema_videoobject":null,"_oembed_049c719bc4a9f89deaead66a7da9fddc":null,"_oembed_time_049c719bc4a9f89deaead66a7da9fddc":null,"_yoast_wpseo_focuskw":null,"_yoast_wpseo_linkdex":null,"_oembed_27e3473bf8bec795fbeb3a9d38489348":null,"_oembed_c3b0f6959478faf92a1f343d8f96b19e":null,"_trp_translated_slug_en_us":null,"_wp_desired_post_slug":null,"_yoast_wpseo_title":null,"tldname":null,"tldpreis":null,"tldrubrik":null,"tldpolicylink":null,"tldsize":null,"tldregistrierungsdauer":null,"tldtransfer":null,"tldwhoisprivacy":null,"tldregistrarchange":null,"tldregistrantchange":null,"tldwhoisupdate":null,"tldnameserverupdate":null,"tlddeletesofort":null,"tlddeleteexpire":null,"tldumlaute":null,"tldrestore":null,"tldsubcategory":null,"tldbildname":null,"tldbildurl":null,"tldclean":null,"tldcategory":null,"tldpolicy":null,"tldbesonderheiten":null,"tld_bedeutung":null,"_oembed_d167040d816d8f94c072940c8009f5f8":null,"_oembed_b0a0fa59ef14f8870da2c63f2027d064":null,"_oembed_4792fa4dfb2a8f09ab950a73b7f313ba":null,"_oembed_33ceb1fe54a8ab775d9410abf699878d":null,"_oembed_fd7014d14d919b45ec004937c0db9335":null,"_oembed_21a029d076783ec3e8042698c351bd7e":null,"_oembed_be5ea8a0c7b18e658f08cc571a909452":null,"_oembed_a9ca7a298b19f9b48ec5914e010294d2":null,"_oembed_f8db6b27d08a2bb1f920e7647808899a":null,"_oembed_168ebde5096e77d8a89326519af9e022":null,"_oembed_cdb76f1b345b42743edfe25481b6f98f":null,"_oembed_87b0613611ae54e86e8864265404b0a1":null,"_oembed_27aa0e5cf3f1bb4bc416a4641a5ac273":null,"_oembed_time_27aa0e5cf3f1bb4bc416a4641a5ac273":null,"_tldname":null,"_tldclean":null,"_tldpreis":null,"_tldcategory":null,"_tldsubcategory":null,"_tldpolicy":null,"_tldpolicylink":null,"_tldsize":null,"_tldregistrierungsdauer":null,"_tldtransfer":null,"_tldwhoisprivacy":null,"_tldregistrarchange":null,"_tldregistrantchange":null,"_tldwhoisupdate":null,"_tldnameserverupdate":null,"_tlddeletesofort":null,"_tlddeleteexpire":null,"_tldumlaute":null,"_tldrestore":null,"_tldbildname":null,"_tldbildurl":null,"_tld_bedeutung":null,"_tldbesonderheiten":null,"_oembed_ad96e4112edb9f8ffa35731d4098bc6b":null,"_oembed_8357e2b8a2575c74ed5978f262a10126":null,"_oembed_3d5fea5103dd0d22ec5d6a33eff7f863":null,"_eael_widget_elements":null,"_oembed_0d8a206f09633e3d62b95a15a4dd0487":null,"_oembed_time_0d8a206f09633e3d62b95a15a4dd0487":null,"_aioseo_description":null,"_eb_attr":null,"_eb_data_table":null,"_oembed_819a879e7da16dd629cfd15a97334c8a":null,"_oembed_time_819a879e7da16dd629cfd15a97334c8a":null,"_acf_changed":null,"_wpcode_auto_insert":null,"_edit_last":null,"_edit_lock":null,"_oembed_e7b913c6c84084ed9702cb4feb012ddd":null,"_oembed_bfde9e10f59a17b85fc8917fa7edf782":null,"_oembed_time_bfde9e10f59a17b85fc8917fa7edf782":null,"_oembed_03514b67990db061d7c4672de26dc514":null,"_oembed_time_03514b67990db061d7c4672de26dc514":null,"rank_math_news_sitemap_robots":null,"rank_math_robots":null,"_eael_post_view_count":"892","_trp_automatically_translated_slug_ru_ru":null,"_trp_automatically_translated_slug_et":null,"_trp_automatically_translated_slug_lv":null,"_trp_automatically_translated_slug_fr_fr":null,"_trp_automatically_translated_slug_en_us":null,"_wp_old_slug":null,"_trp_automatically_translated_slug_da_dk":null,"_trp_automatically_translated_slug_pl_pl":null,"_trp_automatically_translated_slug_es_es":null,"_trp_automatically_translated_slug_hu_hu":null,"_trp_automatically_translated_slug_fi":null,"_trp_automatically_translated_slug_ja":null,"_trp_automatically_translated_slug_lt_lt":null,"_elementor_edit_mode":null,"_elementor_template_type":null,"_elementor_version":null,"_elementor_pro_version":null,"_wp_page_template":null,"_elementor_page_settings":null,"_elementor_data":null,"_elementor_css":null,"_elementor_conditions":null,"_happyaddons_elements_cache":null,"_oembed_75446120c39305f0da0ccd147f6de9cb":null,"_oembed_time_75446120c39305f0da0ccd147f6de9cb":null,"_oembed_3efb2c3e76a18143e7207993a2a6939a":null,"_oembed_time_3efb2c3e76a18143e7207993a2a6939a":null,"_oembed_59808117857ddf57e478a31d79f76e4d":null,"_oembed_time_59808117857ddf57e478a31d79f76e4d":null,"_oembed_965c5b49aa8d22ce37dfb3bde0268600":null,"_oembed_time_965c5b49aa8d22ce37dfb3bde0268600":null,"_oembed_81002f7ee3604f645db4ebcfd1912acf":null,"_oembed_time_81002f7ee3604f645db4ebcfd1912acf":null,"_elementor_screenshot":null,"_oembed_7ea3429961cf98fa85da9747683af827":null,"_oembed_time_7ea3429961cf98fa85da9747683af827":null,"_elementor_controls_usage":null,"_elementor_page_assets":[],"_elementor_screenshot_failed":null,"theplus_transient_widgets":null,"_eael_custom_js":null,"_wp_old_date":null,"_trp_automatically_translated_slug_it_it":null,"_trp_automatically_translated_slug_pt_pt":null,"_trp_automatically_translated_slug_zh_cn":null,"_trp_automatically_translated_slug_nl_nl":null,"_trp_automatically_translated_slug_pt_br":null,"_trp_automatically_translated_slug_sv_se":null,"rank_math_analytic_object_id":null,"rank_math_internal_links_processed":"1","_trp_automatically_translated_slug_ro_ro":null,"_trp_automatically_translated_slug_sk_sk":null,"_trp_automatically_translated_slug_bg_bg":null,"_trp_automatically_translated_slug_sl_si":null,"litespeed_vpi_list":null,"litespeed_vpi_list_mobile":null,"rank_math_seo_score":null,"rank_math_contentai_score":null,"ilj_limitincominglinks":null,"ilj_maxincominglinks":null,"ilj_limitoutgoinglinks":null,"ilj_maxoutgoinglinks":null,"ilj_limitlinksperparagraph":null,"ilj_linksperparagraph":null,"ilj_blacklistdefinition":null,"ilj_linkdefinition":null,"_eb_reusable_block_ids":null,"rank_math_focus_keyword":"DNS-Architektur","rank_math_og_content_image":null,"_yoast_wpseo_metadesc":null,"_yoast_wpseo_content_score":null,"_yoast_wpseo_focuskeywords":null,"_yoast_wpseo_keywordsynonyms":null,"_yoast_wpseo_estimated-reading-time-minutes":null,"rank_math_description":null,"surfer_last_post_update":null,"surfer_last_post_update_direction":null,"surfer_keywords":null,"surfer_location":null,"surfer_draft_id":null,"surfer_permalink_hash":null,"surfer_scrape_ready":null,"_thumbnail_id":"17179","footnotes":null,"_links":{"self":[{"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/posts\/17186","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/comments?post=17186"}],"version-history":[{"count":0,"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/posts\/17186\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/media\/17179"}],"wp:attachment":[{"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/media?parent=17186"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/categories?post=17186"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/webhosting.de\/ja\/wp-json\/wp\/v2\/tags?post=17186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}