{"id":81765,"date":"2026-01-13T11:30:00","date_gmt":"2026-01-13T02:30:00","guid":{"rendered":"https:\/\/www.creationline.com\/tech-blog\/?p=81765"},"modified":"2026-01-13T10:53:00","modified_gmt":"2026-01-13T01:53:00","slug":"cname%e3%81%af%e4%b8%8d%e8%a6%81%ef%bc%9froute53%e3%81%a7%e3%82%b5%e3%83%96%e3%83%89%e3%83%a1%e3%82%a4%e3%83%b3%e3%82%92%e9%81%8b%e7%94%a8%e3%81%99%e3%82%8b%e3%81%a8%e3%81%8d%e3%81%ab%e7%9f%a5","status":"publish","type":"post","link":"https:\/\/www.creationline.com\/tech-blog\/cloudnative\/aws\/81765","title":{"rendered":"CNAME\u306f\u4e0d\u8981\uff1fRoute53\u3067\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3092\u904b\u7528\u3059\u308b\u3068\u304d\u306b\u77e5\u3063\u3066\u304a\u304d\u305f\u3044DNS\u306e\u57fa\u672c"},"content":{"rendered":"\n<p>\u3069\u3046\u3082\u3001Cloud &amp; Data Platform\u30c1\u30fc\u30e0\u306e\u570b\u5d8b\u3067\u3059\u3002<br>\u4eca\u56de\u306f\u3001Route 53\u3067\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u904b\u7528\u3092\u3059\u308b\u524d\u63d0\u3068\u3057\u3066\u3001DNS\u306e\u57fa\u672c\u3068NS\u59d4\u8b72\u306e\u4ed5\u7d44\u307f\u3092\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u76ee\u6b21<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u57f7\u7b46\u306e\u7d4c\u7def<\/li>\n\n\n\n<li>DNS\u306e\u57fa\u672c<\/li>\n\n\n\n<li>\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3068NS\u59d4\u8b72\u306e\u4ed5\u7d44\u307f<\/li>\n\n\n\n<li>\u307e\u3068\u3081<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u57f7\u7b46\u306e\u7d4c\u7def<\/h2>\n\n\n\n<p>\u62c5\u5f53\u6848\u4ef6\u3067\u69cb\u7bc9\u3057\u3066\u3044\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3044\u3066\u3001\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306e\u767a\u884c\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3057\u305f\u3002<br>\u672c\u6765\u3067\u3042\u308c\u3070\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3092\u767a\u884c\u3057\u3066\u3082\u3089\u3046\u306e\u304c\u671b\u307e\u3057\u3044\u306e\u3067\u3059\u304c\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306e\u5bfe\u5fdc\u306b\u306f\u30ea\u30fc\u30c9\u30bf\u30a4\u30e0\u304c\u9577\u304f\u767a\u751f\u3059\u308b\u305f\u3081\u3001<strong>\u958b\u767a\u74b0\u5883\u7528\u306e\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306b\u3064\u3044\u3066\u306f\u5f0a\u793e\u3067\u767a\u884c\u3057\u305f\u3082\u306e\u3092\u5229\u7528\u3059\u308b\u65b9\u91dd<\/strong>\u3068\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u4f5c\u696d\u306b\u3042\u305f\u3063\u3066\u306f\u3001\u4ed6\u30e1\u30f3\u30d0\u30fc\u304c\u5225\u6848\u4ef6\u3067\u6b8b\u3057\u3066\u3044\u305f\u30e1\u30e2\u3092\u53c2\u8003\u306b\u3057\u3001\u3072\u3068\u307e\u305a\u4ee5\u4e0b\u306e\u624b\u9806\u3092\u5b9f\u65bd\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div style=\"border:1px solid #ccc; padding:16px; margin:24px 0; background-color:#f5f5f5;\">\u2460 Route 53 \u3067\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u7528\u306e\u30d1\u30d6\u30ea\u30c3\u30af\u30db\u30b9\u30c8\u30be\u30fc\u30f3\u3092\u4f5c\u6210<br>\u2193<br>\u2461 \u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306e CNAME \u30ec\u30b3\u30fc\u30c9\u304a\u3088\u3073 NS \u30ec\u30b3\u30fc\u30c9\u306e\u767b\u9332\u3092\u7533\u8acb<\/div>\n<\/div><\/div>\n\n\n\n<p>\u7d50\u679c\u3068\u3057\u3066\u3001\u958b\u767a\u74b0\u5883\u3067\u306f \u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\uff08<code>xxxx.dev.exapmle.com<\/code>\uff09 \u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001\u671f\u5f85\u901a\u308a\u306b AWS \u5074\u306e\u30ea\u30bd\u30fc\u30b9\u3078\u5230\u9054\u3067\u304d\u308b\u72b6\u614b\u3068\u306a\u308a\u307e\u3057\u305f\u3002<br>\uff08\u4f8b\uff1aDNS\u306e\u540d\u524d\u89e3\u6c7a\u304c\u6210\u529f\u3057\u3001\u5bfe\u8c61\u306eALB \/ CloudFront\u7b49\u3078\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3055\u308c\u3001HTTPS\u3067\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u72b6\u614b\uff09<\/p>\n\n\n\n<p>\u3057\u304b\u3057\u5f53\u6642\u306e\u79c1\u306f\u3001DNS\u306e\u4ed5\u7d44\u307f\u3092\u5341\u5206\u306b\u7406\u89e3\u3067\u304d\u3066\u304a\u3089\u305a\u3001<br>\u300c\u306a\u305c\u3053\u306e\u4f5c\u696d\u304c\u5fc5\u8981\u306a\u306e\u304b\u300d\u300c\u5404\u30ec\u30b3\u30fc\u30c9\u304c\u3069\u306e\u3088\u3046\u306a\u5f79\u5272\u3092\u6301\u3063\u3066\u3044\u308b\u306e\u304b\u300d\u3092\u8aac\u660e\u3067\u304d\u306a\u3044\u72b6\u614b\u3067\u3057\u305f\u3002<br>\u8a00\u308f\u3070\u3001<strong>\u300c\u624b\u9806\u901a\u308a\u306b\u8a2d\u5b9a\u3057\u305f\u3089\u52d5\u3044\u305f\u304c\u3001\u4ed5\u7d44\u307f\u306f\u7406\u89e3\u3067\u304d\u3066\u3044\u306a\u3044\u300d<\/strong> \u3068\u3044\u3046\u72b6\u6cc1\u3067\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u305d\u308c\u304b\u3089\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u5bfe\u3057\u3066 <strong>\u691c\u8a3c\u74b0\u5883\u30fb\u672c\u756a\u74b0\u5883\u7528\u306e\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u7533\u8acb\u3092\u4f9d\u983c\u3059\u308b\u30bf\u30a4\u30df\u30f3\u30b0<\/strong>\u304c\u8a2a\u308c\u307e\u3057\u305f\u3002<br>\u958b\u767a\u74b0\u5883\u3067\u306e\u624b\u9806\u3092\u3082\u3068\u306b\u300cCNAME\u3084NS\u30ec\u30b3\u30fc\u30c9\u3092\u767b\u9332\u3057\u3066\u3082\u3089\u3048\u3070\u826f\u3055\u305d\u3046\u3060\u300d\u3068\u306f\u601d\u3044\u3064\u3064\u3082\u3001\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3057\u306a\u3044\u307e\u307e\u4f9d\u983c\u3059\u308b\u306e\u306f\u671b\u307e\u3057\u304f\u306a\u3044\u3068\u611f\u3058\u307e\u3057\u305f\u3002<br>\u7279\u306b\u3001<strong>\u3069\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u306b\u767b\u9332\u3057\u3066\u3082\u3089\u3046\u5fc5\u8981\u304c\u3042\u308b\u306e\u304b<\/strong>\u3001\u307e\u305f\u305d\u308c\u304c <strong>DNS\u306e\u3069\u306e\u90e8\u5206\u306b\u5f71\u97ff\u3059\u308b\u306e\u304b<\/strong> \u304c\u66d6\u6627\u306a\u307e\u307e\u3060\u3063\u305f\u305f\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001DNS\u306e\u4ed5\u7d44\u307f\u3092\u6539\u3081\u3066\u6574\u7406\u3057\u3001\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u904b\u7528\u306b\u304a\u3044\u3066\u300c\u3069\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u3001\u3069\u3053\u306b\u767b\u9332\u3059\u3079\u304d\u304b\u300d\u3092\u8aac\u660e\u3067\u304d\u308b\u72b6\u614b\u3092\u76ee\u6307\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">DNS\u306e\u57fa\u672c<\/h1>\n\n\n\n<p>\u3053\u3053\u3067\u306f\u3001DNS\u306e\u57fa\u672c\u3068\u3057\u3066 <strong>\u540d\u524d\u89e3\u6c7a\u304c\u3069\u306e\u3088\u3046\u306b\u3057\u3066\u884c\u308f\u308c\u308b\u306e\u304b<\/strong>\u3001\u305d\u3057\u3066\u305d\u306e\u904e\u7a0b\u3067\u767b\u5834\u3059\u308b <strong>\u30ea\u30be\u30eb\u30d0\uff0f\u6a29\u5a01DNS\uff0f\u5404\u30ec\u30b3\u30fc\u30c9\u306e\u5f79\u5272<\/strong> \u3092\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1. DNS\u3068\u306f\u4f55\u304b<\/h2>\n\n\n\n<p>DNS\uff08Domain Name System\uff09\u306f\u3001<code>www.example.com<\/code>\u306e\u3088\u3046\u306a <strong>\u4eba\u9593\u304c\u6271\u3044\u3084\u3059\u3044\u30c9\u30e1\u30a4\u30f3\u540d<\/strong>\u3092\u3001\u901a\u4fe1\u306b\u5fc5\u8981\u306a <strong>IP\u30a2\u30c9\u30ec\u30b9<\/strong>\u306b\u5909\u63db\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u307e\u305f\u3001\u30c9\u30e1\u30a4\u30f3\u540d\u3092IP\u30a2\u30c9\u30ec\u30b9\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u3092<strong>\u540d\u524d\u89e3\u6c7a<\/strong>\u3068\u547c\u3073\u307e\u3059\u3002<br>\u79c1\u305f\u3061\u306f\u666e\u6bb5\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u6700\u7d42\u7684\u306b\u306f DNS \u306b\u3088\u3063\u3066 IP \u30a2\u30c9\u30ec\u30b9\u304c\u53d6\u5f97\u3055\u308c\u3001\u305d\u306e IP \u306b\u5bfe\u3057\u3066\u901a\u4fe1\u304c\u884c\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. \u540d\u524d\u89e3\u6c7a\u306e\u5168\u4f53\u50cf<\/h2>\n\n\n\n<p>\u307e\u305a\u306f\u3001\u79c1\u305f\u3061\u306ePC\u3084\u30b9\u30de\u30db\u304c\u3069\u306e\u3088\u3046\u306b\u540d\u524d\u89e3\u6c7a\u3092\u30b9\u30bf\u30fc\u30c8\u3055\u305b\u308b\u306e\u304b\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u30d6\u30e9\u30a6\u30b6\u3067 <code>app.example.com<\/code> \u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u969b\u3001\u88cf\u5074\u3067\u306f\u6b21\u306e\u3088\u3046\u306a\u6d41\u308c\u304c\u8d77\u304d\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30d6\u30e9\u30a6\u30b6\u304cIP\u30a2\u30c9\u30ec\u30b9\u3092\u8981\u6c42: <\/strong>\u63a5\u7d9a\u306e\u305f\u3081\u306bIP\u30a2\u30c9\u30ec\u30b9\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>OS\u304c\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u78ba\u8a8d: <\/strong>\u7aef\u672b\u5185\u306b\u4ee5\u524d\u306e\u8a18\u9332\u304c\u6b8b\u3063\u3066\u3044\u308c\u3070\u305d\u308c\u3092\u4f7f\u3044\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30ea\u30be\u30eb\u30d0\u3078\u554f\u3044\u5408\u308f\u305b:<\/strong> \u8a18\u9332\u304c\u306a\u3044\u5834\u5408\u3001\u7aef\u672b\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b<strong>\u300c\u30ea\u30be\u30eb\u30d0\uff08DNS\u30b5\u30fc\u30d0\uff09\u300d<\/strong>\u3078\u8abf\u67fb\u3092\u4e38\u6295\u3052\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u56de\u7b54\u306e\u53d7\u3051\u53d6\u308a: <\/strong>\u30ea\u30be\u30eb\u30d0\u304c\u8abf\u3079\u3066\u304d\u305fIP\u30a2\u30c9\u30ec\u30b9\u3092\u53d7\u3051\u53d6\u308a\u3001\u76ee\u7684\u306e\u30b5\u30fc\u30d0\u3078\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u30dd\u30a4\u30f3\u30c8\u306f\u3001<strong>\u30d6\u30e9\u30a6\u30b6\u81ea\u8eab\u304cDNS\u306e\u968e\u5c64\u69cb\u9020\u3092\u8fbf\u3063\u3066\u8abf\u3079\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u306a\u304f\u3001\u30ea\u30be\u30eb\u30d0\u304c\u4ee3\u308f\u308a\u306b\u8abf\u3079\u3066\u304f\u308c\u3066\u3044\u308b<\/strong>\u3068\u3044\u3046\u70b9\u3067\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. \u30ea\u30be\u30eb\u30d0\u3068\u6a29\u5a01DNS<\/h2>\n\n\n\n<p>DNS\u306e\u554f\u3044\u5408\u308f\u305b\u3067\u306f\u3001\u5f79\u5272\u306e\u7570\u306a\u308b2\u7a2e\u985e\u306eDNS\u30b5\u30fc\u30d0\u304c\u767b\u5834\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30ea\u30be\u30eb\u30d0\uff08Recursive Resolver\uff09<\/h3>\n\n\n\n<p>\u30ea\u30be\u30eb\u30d0\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\uff08PC\u3084\u30b9\u30de\u30db\uff09\u304b\u3089\u554f\u3044\u5408\u308f\u305b\u3092\u53d7\u3051\u3001\u4ee3\u308f\u308a\u306b\u968e\u5c64\u7684\u306b\u8abf\u3079\u3066\u6700\u7d42\u7684\u306a\u56de\u7b54\u3092\u8fd4\u3057\u3066\u304f\u308c\u308b DNS \u30b5\u30fc\u30d0\u3067\u3059\u3002<br>\u305f\u3068\u3048\u3070\u4ee5\u4e0b\u304c\u30ea\u30be\u30eb\u30d0\u306b\u8a72\u5f53\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u793e\u5185\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306eDNS\u30b5\u30fc\u30d0<\/li>\n\n\n\n<li>ISP\u306eDNS\u30b5\u30fc\u30d0<\/li>\n\n\n\n<li>Public DNS\uff08Google DNS <code>8.8.8.8<\/code> \u306a\u3069\uff09<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u6a29\u5a01DNS\uff08Authoritative DNS\uff09<\/h3>\n\n\n\n<p>\u6a29\u5a01DNS\u306f\u3001<code>example.com<\/code> \u306e\u3088\u3046\u306a\u7279\u5b9a\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u5bfe\u3057\u3066\u3001A\u30ec\u30b3\u30fc\u30c9\u3084CNAME\u30ec\u30b3\u30fc\u30c9\u306a\u3069\u306eDNS\u30ec\u30b3\u30fc\u30c9\u3092\u7ba1\u7406\u3057\u3066\u3044\u308bDNS\u30b5\u30fc\u30d0\u3067\u3059\u3002<br><code>app.example.com<\/code> \u306eIP\u30a2\u30c9\u30ec\u30b9\u306f\uff1f \u3068\u554f\u3044\u5408\u308f\u305b\u304c\u6765\u305f\u3068\u304d\u306b\u3001\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u30ec\u30b3\u30fc\u30c9\u60c5\u5831\u3092\u3082\u3068\u306b \u6700\u7d42\u7684\u306a\u56de\u7b54\uff08IP\u30a2\u30c9\u30ec\u30b9\u306a\u3069\uff09\u3092\u8fd4\u3057\u307e\u3059\u3002<br>Route 53 \u306e Public Hosted Zone\uff08\u30d1\u30d6\u30ea\u30c3\u30af\u30db\u30b9\u30c8\u30be\u30fc\u30f3\uff09\u306f\u3001\u3053\u306e <strong>\u6a29\u5a01DNS\u3068\u3057\u3066\u6a5f\u80fd<\/strong>\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. \u540d\u524d\u89e3\u6c7a\u304c\u9032\u3080\u4ed5\u7d44\u307f\uff08\u6a29\u5a01DNS\u306e\u30ea\u30ec\u30fc\uff09<\/h2>\n\n\n\n<p><code>2.\u540d\u524d\u89e3\u6c7a\u306e\u5168\u4f53\u50cf<\/code> \u3067\u8abf\u67fb\u3092\u4e38\u6295\u3052\u3055\u308c\u305f\u30ea\u30be\u30eb\u30d0\u306f\u3001\u5177\u4f53\u7684\u306b\u3069\u3046\u3084\u3063\u3066\u6b63\u89e3\u3092\u898b\u3064\u3051\u3066\u3044\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u305d\u308c\u306f\u3001<strong>\u300c\u5fc5\u8981\u306a\u60c5\u5831\u3092\u6301\u3063\u3066\u3044\u308b\u6a29\u5a01DNS\u3078\u8fbf\u308a\u7740\u304f\u307e\u3067\u306e\u30ea\u30ec\u30fc\u300d<\/strong>\u3068\u3057\u3066\u7406\u89e3\u3059\u308b\u3068\u5206\u304b\u308a\u3084\u3059\u3044\u3067\u3059\u3002<br>\u4ee5\u4e0b\u306f <code>app.example.com<\/code> \u3092\u5f15\u304f\u3068\u304d\u306e\u5177\u4f53\u7684\u306a\u6d41\u308c\u3067\u3059\u3002<\/p>\n\n\n\n<div style=\"border:1px solid #ccc; padding:16px; margin:24px 0; background-color:#f5f5f5; font-family:monospace;\">\n[\u30af\u30e9\u30a4\u30a2\u30f3\u30c8]<br>\n&nbsp;&nbsp;\u2502 app.example.com \u306eIP\u3092\u77e5\u308a\u305f\u3044<br>\n&nbsp;&nbsp;\u25bc<br>\n[\u30ea\u30be\u30eb\u30d0]<br>\n&nbsp;&nbsp;\u2502 \uff08\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u306a\u3051\u308c\u3070\uff09\u968e\u5c64\u7684\u306b\u554f\u3044\u5408\u308f\u305b\u3092\u884c\u3046<br>\n&nbsp;&nbsp;\u25bc<br>\n[\u30eb\u30fc\u30c8DNS] \u2500\u2500\u300c.com \u306e\u3053\u3068\u306f TLD DNS \u306b\u805e\u3044\u3066\u300d<br>\n&nbsp;&nbsp;\u25bc<br>\n[.com (TLD) DNS] \u2500\u2500\u300cexample.com \u306e\u3053\u3068\u306f example.com \u306e\u6a29\u5a01DNS\u306b\u805e\u3044\u3066\u300d<br>\n&nbsp;&nbsp;\u25bc<br>\n[example.com \u306e\u6a29\u5a01DNS] \u2500\u2500\u300capp.example.com \u306f 203.0.113.10 \u3067\u3059\uff08A\u30ec\u30b3\u30fc\u30c9\uff09\u300d<br>\n&nbsp;&nbsp;\u25bc<br>\n[\u30ea\u30be\u30eb\u30d0] \u2500\u2500\uff08\u7d50\u679c\u3092\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306b\u8fd4\u3059\uff09<br>\n&nbsp;&nbsp;\u25bc<br>\n[\u30af\u30e9\u30a4\u30a2\u30f3\u30c8] \u2500\u2500 203.0.113.10 \u306b\u30a2\u30af\u30bb\u30b9\n<\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"559\" src=\"https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2026\/01\/dns_resolution-1024x559.png\" alt=\"\" class=\"wp-image-81820\" srcset=\"https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2026\/01\/dns_resolution-1024x559.png 1024w, https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2026\/01\/dns_resolution-360x196.png 360w, https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2026\/01\/dns_resolution-768x419.png 768w, https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2026\/01\/dns_resolution.png 1408w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u30ea\u30be\u30eb\u30d0\u304c\u300c\u3069\u3053\u306b\u805e\u3051\u3070\u3088\u3044\u304b\u300d\u3092\u9806\u756a\u306b\u8fbf\u3063\u3066\u3044\u304f\u3053\u3068\u3067\u3001\u6700\u7d42\u7684\u306a\u56de\u7b54\u306b\u5230\u9054\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>\u56f3\u306e\u30dd\u30a4\u30f3\u30c8<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u57fa\u672c\u7684\u306b\u300c\u30ea\u30be\u30eb\u30d0\u300d\u3060\u3051\u306b\u554f\u3044\u5408\u308f\u305b\u308b<\/li>\n\n\n\n<li>\u30ea\u30be\u30eb\u30d0\u304c\u300c\u3069\u3053\u306b\u805e\u3051\u3070\u3088\u3044\u304b\u300d\u3092\u9806\u756a\u306b\u8fbf\u3063\u3066\u3044\u304f<\/li>\n\n\n\n<li>\u6700\u7d42\u7684\u306a\u56de\u7b54\u306f <strong>\u6a29\u5a01DNS\u304c\u8fd4\u3059<\/strong><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. \u30c9\u30e1\u30a4\u30f3\u306e\u968e\u5c64\u69cb\u9020\u3068\u300c\u30be\u30fc\u30f3\u300d<\/h2>\n\n\n\n<p>\u540d\u524d\u89e3\u6c7a\u306e\u6d41\u308c\u304c\u308f\u304b\u3063\u305f\u3068\u3053\u308d\u3067\u3001DNS\u306e\u7ba1\u7406\u5358\u4f4d\u3067\u3042\u308b<strong>\u300c\u30be\u30fc\u30f3\u300d<\/strong>\u306b\u3064\u3044\u3066\u6574\u7406\u3057\u307e\u3059\u3002 <br>\u30c9\u30e1\u30a4\u30f3\u540d\u306f\u3001<code>app.dev.example.com<\/code> \u306e\u3088\u3046\u306b\u53f3\u304b\u3089\u5de6\u3078\u968e\u5c64\u69cb\u9020\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"872\" height=\"381\" src=\"https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2026\/01\/image.png\" alt=\"\" class=\"wp-image-81854\" style=\"width:450px;height:auto\" srcset=\"https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2026\/01\/image.png 872w, https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2026\/01\/image-360x157.png 360w, https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2026\/01\/image-768x336.png 768w\" sizes=\"auto, (max-width: 872px) 100vw, 872px\" \/><\/figure>\n\n\n\n<p>\u3053\u306e\u968e\u5c64\u69cb\u9020\u306e\u4e2d\u3067\u3001<strong>\u6a29\u5a01DNS\u304c DNS \u30ec\u30b3\u30fc\u30c9\uff08A \/ CNAME \/ TXT \u306a\u3069\uff09\u3092\u7ba1\u7406\u3059\u308b\u7bc4\u56f2<\/strong>\u3092 <strong>\u30be\u30fc\u30f3<\/strong> \u3068\u547c\u3073\u307e\u3059\u3002<br>Route 53 \u306e\u300c\u30db\u30b9\u30c8\u30be\u30fc\u30f3\u300d\u3082\u3001\u307e\u3055\u306b\u3053\u306e\u30be\u30fc\u30f3\u5358\u4f4d\u3067 DNS \u30ec\u30b3\u30fc\u30c9\u3092\u7ba1\u7406\u3059\u308b\u305f\u3081\u306e\u5834\u6240\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">6. \u5404\u30ec\u30b3\u30fc\u30c9\u306e\u5f79\u5272\uff08NS \/ A \/ CNAME \/ TXT\uff09<\/h2>\n\n\n\n<p>\u3053\u3053\u304b\u3089\u306f\u3001\u5148\u307b\u3069\u8aac\u660e\u3057\u305f<strong>\u300c\u30be\u30fc\u30f3\u300d<\/strong>\u304c\u3069\u306e\u3088\u3046\u306b\u7ba1\u7406\u3055\u308c\u3001\u540d\u524d\u89e3\u6c7a\u306b\u53cd\u6620\u3055\u308c\u308b\u306e\u304b\u3092\u62bc\u3055\u3048\u308b\u305f\u3081\u306b\u3001\u5404 DNS \u30ec\u30b3\u30fc\u30c9\u306e\u5f79\u5272\u3092\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">NS\u30ec\u30b3\u30fc\u30c9\uff1a\u3053\u306e\u30be\u30fc\u30f3\u3092\u7ba1\u7406\u3059\u308b\u6a29\u5a01DNS\u306f\u3069\u3053\u304b\uff1f<\/h3>\n\n\n\n<p>NS\uff08Name Server\uff09\u30ec\u30b3\u30fc\u30c9\u306f\u3001<br>\u300c<strong>\u3053\u306e\u30be\u30fc\u30f3\u306e\u540d\u524d\u89e3\u6c7a\u306f\u3001\u3069\u306e\u6a29\u5a01DNS\uff08\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\uff09\u304c\u62c5\u5f53\u3059\u308b\u304b<\/strong>\u300d\u3092\u793a\u3059\u30ec\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u8a00\u3044\u63db\u3048\u308b\u3068\u3001NS\u30ec\u30b3\u30fc\u30c9\u306f<br><strong>\u30be\u30fc\u30f3\u3068\u3001\u305d\u308c\u3092\u7ba1\u7406\u3059\u308b\u6a29\u5a01DNS\u3092\u7d50\u3073\u3064\u3051\u308b\u305f\u3081\u306e\u30ec\u30b3\u30fc\u30c9<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\uff1a<code>example.com<\/code> \u3068\u3044\u3046\u30be\u30fc\u30f3\u3092\u7ba1\u7406\u3059\u308b\u6a29\u5a01DNS\u3092\u793a\u3059\u5834\u5408<br>\u305f\u3068\u3048\u3070\u3001<code>example.com<\/code> \u3068\u3044\u3046\u30be\u30fc\u30f3\u3092\u7ba1\u7406\u3057\u3066\u3044\u308b\u6a29\u5a01DNS\u306f\u3001<br><code>example.com<\/code> \u306e NS \u30ec\u30b3\u30fc\u30c9\u3068\u3057\u3066\u6b21\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<div style=\"border:1px solid #ccc; padding:16px; margin:24px 0; background-color:#f5f5f5; font-family:monospace;\">\nexample.com \u306e NS \u30ec\u30b3\u30fc\u30c9\u306e\u5024 = ns1.example-dns.com<br>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ns2.example-dns.com<br>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;:\n<\/div>\n\n\n\n\n<p>\u3053\u308c\u306b\u3088\u308a\u3001\u30ea\u30be\u30eb\u30d0\u304c <code>www.example.com<\/code> \u3084 <code>api.example.com<\/code> \u3092\u5f15\u304f\u3068\u304d\u3001<br><code>example.com<\/code> \u306e\u30be\u30fc\u30f3\u306b\u95a2\u3059\u308b\u554f\u3044\u5408\u308f\u305b\u306f\u3001\u3053\u308c\u3089\u306e\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\uff08\u6a29\u5a01DNS\uff09\u3078\u9001\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b NS \u30ec\u30b3\u30fc\u30c9\u306f\u3001<br><strong>\u300c\u3053\u306e\u30be\u30fc\u30f3\u306e\u6b63\u89e3\u30c7\u30fc\u30bf\uff08DNS\u30ec\u30b3\u30fc\u30c9\uff09\u3092\u8ab0\u304c\u7ba1\u7406\u3057\u3066\u3044\u308b\u304b\u300d<\/strong>\u3092\u793a\u3059\u5f79\u5272\u3092\u6301\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">A\u30ec\u30b3\u30fc\u30c9\uff1a\u30c9\u30e1\u30a4\u30f3\u540d \u2192 IP\u30a2\u30c9\u30ec\u30b9<\/h3>\n\n\n\n<p>A\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u540d\u3092 IP\u30a2\u30c9\u30ec\u30b9\u306b\u7d10\u3065\u3051\u308b\u6700\u3082\u57fa\u672c\u7684\u306a\u30ec\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>app.example.com<\/code> \u2192 <code>203.0.113.10<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u540d\u524d\u89e3\u6c7a\u306e\u6700\u5f8c\u306b\u5f97\u305f\u3044\u60c5\u5831\u306f\u3001\u57fa\u672c\u7684\u306b\u3053\u306e <strong>A\u30ec\u30b3\u30fc\u30c9<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">CNAME\u30ec\u30b3\u30fc\u30c9\uff1a\u5225\u540d\u3078\u8ee2\u9001\uff08\u540d\u524d\u89e3\u6c7a\u3092\u7d9a\u3051\u308b\uff09<\/h3>\n\n\n\n<p>CNAME\uff08Canonical Name\uff09\u30ec\u30b3\u30fc\u30c9\u306f\u3001<br>\u300c\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u306f\u5225\u540d\u3067\u3059\u300d\u3068\u3057\u3066\u3001\u89e3\u6c7a\u5148\u3092\u5225\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u306b\u7f6e\u304d\u63db\u3048\u308b\u30ec\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4f8b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>app.example.com<\/code> \u2192 <code>app-alb-123456.ap-northeast-1.elb.amazonaws.com<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u3053\u306e\u5834\u5408\u3001<code>app.example.com<\/code> \u306e\u554f\u3044\u5408\u308f\u305b\u306f\u5225\u540d\u3078\u5909\u63db\u3055\u308c\u3001<br><strong>\u6700\u7d42\u7684\u306b\u306f <code>app-alb-123456.ap-northeast-1.elb.amazonaws.com <\/code>\u306e\u5148\u306e DNS \u30ec\u30b3\u30fc\u30c9\u3092\u89e3\u6c7a\u3057\u3066IP\u3092\u5f97\u307e\u3059<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">TXT\u30ec\u30b3\u30fc\u30c9\uff1a\u6587\u5b57\u5217\u60c5\u5831\uff08\u691c\u8a3c\u7528\u9014\u3067\u3088\u304f\u4f7f\u3046\uff09<\/h3>\n\n\n\n<p>TXT\u30ec\u30b3\u30fc\u30c9\u306f\u3001\u6587\u5b57\u5217\u60c5\u5831\u3092\u4fdd\u6301\u3067\u304d\u308b\u30ec\u30b3\u30fc\u30c9\u3067\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u7528\u9014\u3067\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>ACM\uff08AWS Certificate Manager\uff09\u306eDNS\u691c\u8a3c<\/li>\n\n\n\n<li>SPF \/ DKIM \/ DMARC\uff08\u30e1\u30fc\u30eb\u306e\u8a8d\u8a3c\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u4eca\u56de\u306e\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u904b\u7528\u3067\u3082\u3001<strong>\u8a3c\u660e\u66f8\u306eDNS\u691c\u8a3c\u3067TXT\u30ec\u30b3\u30fc\u30c9\u304c\u767b\u5834<\/strong>\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u3053\u307e\u3067\u3067DNS\u306e\u57fa\u672c\u8981\u7d20\u3092\u62bc\u3055\u3048\u305f\u306e\u3067\u3001\u6b21\u7ae0\u3067\u306f\u3053\u308c\u3089\u3092\u5b9f\u52d9\u3067\u3069\u3046\u4f7f\u3046\u304b\u3068\u3057\u3066\u3001\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306eNS\u59d4\u8b72\u3092\u898b\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3068NS\u59d4\u8b72\u306e\u4ed5\u7d44\u307f<\/h1>\n\n\n\n<p>\u524d\u7ae0\u3067\u306f\u3001DNS\u306e\u540d\u524d\u89e3\u6c7a\u306e\u4ed5\u7d44\u307f\u3068\u3001 \u30be\u30fc\u30f3\u30fbNS\u30ec\u30b3\u30fc\u30c9\u3068\u3044\u3063\u305f\u57fa\u672c\u8981\u7d20\u3092\u6574\u7406\u3057\u307e\u3057\u305f\u3002 \u3053\u3053\u304b\u3089\u306f\u3001\u305d\u308c\u3089\u306e\u4ed5\u7d44\u307f\u304c \u5b9f\u52d9\u3067\u3069\u306e\u3088\u3046\u306b\u4f7f\u308f\u308c\u308b\u306e\u304b\u3092\u898b\u3066\u3044\u304d\u307e\u3059\u3002 \u7279\u306b\u3001\u958b\u767a\u3084\u691c\u8a3c\u306e\u73fe\u5834\u3067\u3088\u304f\u767b\u5834\u3059\u308b\u306e\u304c\u3001 \u300c\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3060\u3051\u3092\u5225\u306e\u5834\u6240\u3067\u7ba1\u7406\u3057\u305f\u3044\u300d\u3068\u3044\u3046\u30b1\u30fc\u30b9\u3067\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3092\u5225\u306e\u5834\u6240\u3067\u7ba1\u7406\u3057\u305f\u3044\u3001\u3068\u306f\uff1f<\/h2>\n\n\n\n<p>\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u904b\u7528\u3067\u306f\u3001\u305f\u3068\u3048\u3070\u6b21\u306e\u3088\u3046\u306a\u72b6\u6cc1\u304c\u3088\u304f\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u89aa\u30c9\u30e1\u30a4\u30f3 <code>example.com<\/code> \u306f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u7ba1\u7406\u3057\u3066\u3044\u308b<\/li>\n\n\n\n<li>\u3057\u304b\u3057 <code>dev.example.com<\/code> \u306f\u958b\u767a\u30c1\u30fc\u30e0\u5074\u3067\u67d4\u8edf\u306b\u7ba1\u7406\u3057\u305f\u3044<br>\uff08\u30ec\u30b3\u30fc\u30c9\u8ffd\u52a0\u30fb\u5909\u66f4\u3092\u983b\u7e41\u306b\u884c\u3044\u305f\u3044\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u306e\u3068\u304d\u3001\u89aa\u30c9\u30e1\u30a4\u30f3\u5074\u306b\u90fd\u5ea6<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>app.dev.example.com<\/code> \u306eA\/CNAME\u3092\u8ffd\u52a0\u3057\u3066\u3082\u3089\u3046<\/li>\n\n\n\n<li>\u691c\u8a3c\u7528\u306eTXT\u30ec\u30b3\u30fc\u30c9\u3092\u8ffd\u52a0\u3057\u3066\u3082\u3089\u3046<\/li>\n<\/ul>\n\n\n\n<p>\u3068\u3044\u3046\u904b\u7528\u306b\u3059\u308b\u3068\u3001\u8abf\u6574\u30b3\u30b9\u30c8\u304c\u9ad8\u304f\u306a\u308a\u3001\u30b9\u30d4\u30fc\u30c9\u3082\u843d\u3061\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u3053\u3067\u5229\u7528\u3055\u308c\u308b\u306e\u304c <strong>NS\u30ec\u30b3\u30fc\u30c9\u306b\u3088\u308b\u59d4\u8b72\uff08delegation\uff09<\/strong> \u3067\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">NS\u59d4\u8b72\u3068\u306f\u300c\u3053\u306e\u7bc4\u56f2\u306f\u3053\u306e\u6a29\u5a01DNS\u304c\u7b54\u3048\u308b\u300d\u3068\u3044\u3046\u5ba3\u8a00<\/h2>\n\n\n\n<p>NS\u30ec\u30b3\u30fc\u30c9\u306f\u300c\u3053\u306e\u30c9\u30e1\u30a4\u30f3\uff08\u30be\u30fc\u30f3\uff09\u306e\u6a29\u5a01DNS\u306f\u3069\u3053\u304b\u300d\u3092\u793a\u3059\u30ec\u30b3\u30fc\u30c9\u3067\u3057\u305f\u3002<br>\u3064\u307e\u308a\u3001\u89aa\u30c9\u30e1\u30a4\u30f3\u5074\u3067\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306eNS\u30ec\u30b3\u30fc\u30c9\u3092\u767b\u9332\u3059\u308b\u3068\u3001\u6b21\u306e\u3053\u3068\u304c\u8d77\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>dev.example.com \u306b\u95a2\u3059\u308b\u554f\u3044\u5408\u308f\u305b\u306f\u3001\u89aa\u30c9\u30e1\u30a4\u30f3\u306e\u6a29\u5a01DNS\u3067\u306f\u306a\u304f\u3001<br><strong>dev.example.com \u306eNS\u30ec\u30b3\u30fc\u30c9\u3067\u6307\u5b9a\u3055\u308c\u305f\u6a29\u5a01DNS\uff08\u4f8b\uff1aRoute 53\uff09\u3078\u8ee2\u9001\u3055\u308c\u308b<\/strong><\/p>\n<\/blockquote>\n\n\n\n<p>\u3053\u308c\u304c <strong>\u59d4\u8b72<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u56f3\u306e\u3088\u3046\u306b\u3001\u89aa\u30c9\u30e1\u30a4\u30f3\u3068\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3067 <strong>\u7ba1\u7406\u8005\u3068\u6a29\u5a01DNS\u3092\u5206\u96e2<\/strong>\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\n\u4f8b\uff1a\u89aa\u30c9\u30e1\u30a4\u30f3 example.com \u3092\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u7ba1\u7406<br>\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3 dev.example.com \u3092 Route 53 \u306b\u59d4\u8b72\u3057\u3066\u81ea\u5206\u305f\u3061\u304c\u7ba1\u7406\n<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"559\" src=\"https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2026\/01\/ns_delegation-1024x559.png\" alt=\"\" class=\"wp-image-81821\" srcset=\"https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2026\/01\/ns_delegation-1024x559.png 1024w, https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2026\/01\/ns_delegation-360x196.png 360w, https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2026\/01\/ns_delegation-768x419.png 768w, https:\/\/www.creationline.com\/tech-blog\/cms_x3GWkuX\/wp-content\/uploads\/2026\/01\/ns_delegation.png 1408w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">Route 53 \u3067\u306e\u4f5c\u696d\u30a4\u30e1\u30fc\u30b8<\/h2>\n\n\n\n<p>Route 53 \u5074\u3067\u306f\u3001<code>dev.example.com<\/code> \u306e Public Hosted Zone \u3092\u4f5c\u6210\u3057\u3001\u305d\u306e\u30be\u30fc\u30f3\u306e\u6a29\u5a01DNS\uff08NS\uff09\u60c5\u5831\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002\u3042\u3068\u306f\u3001\u305d\u306eNS\u60c5\u5831\u3092\u89aa\u30c9\u30e1\u30a4\u30f3\uff08<code>example.com<\/code>\uff09\u5074\u306b\u767b\u9332\u3059\u308c\u3070\u3001<code>dev.example.com<\/code> \u914d\u4e0b\u306e\u540d\u524d\u89e3\u6c7a\u306f Route 53 \u304c\u5fdc\u7b54\u3057\u3066\u304f\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u59d4\u8b72\u5f8c\u306e\u540d\u524d\u89e3\u6c7a\u306f\u3069\u3046\u5909\u308f\u308b\uff1f<\/h2>\n\n\n\n<p>\u59d4\u8b72\u524d\u306f\u3001<code>app.dev.example.com<\/code> \u306e\u554f\u3044\u5408\u308f\u305b\u306f <code>example.com<\/code> \u306e\u6a29\u5a01DNS\u304c\u7b54\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<br>\u3057\u304b\u3057\u3001<code>dev.example.com<\/code> \u3092 Route 53 \u306b\u59d4\u8b72\u3059\u308b\u3068\u3001\u554f\u3044\u5408\u308f\u305b\u306e\u6d41\u308c\u304c\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5909\u308f\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30ea\u30be\u30eb\u30d0\u304c <code>app.dev.example.com<\/code> \u3092\u5f15\u304f<\/li>\n\n\n\n<li><code>.com<\/code> \u2192 <code>example.com<\/code> \u306e\u6a29\u5a01DNS\u3078\u8fbf\u308a\u7740\u304f<\/li>\n\n\n\n<li><code>example.com<\/code> \u306e\u6a29\u5a01DNS\u306f <strong>\u300cdev.example.com \u306e\u3053\u3068\u306f Route 53 \u306b\u805e\u3044\u3066\u300d<\/strong>\uff08NS\u3067\u6848\u5185\uff09<\/li>\n\n\n\n<li>Route 53\uff08<code>dev.example.com<\/code> \u306e\u6a29\u5a01DNS\uff09\u304c <code>app.dev.example.com<\/code> \u306e\u30ec\u30b3\u30fc\u30c9\u3092\u8fd4\u3059<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u89aa\u30c9\u30e1\u30a4\u30f3\u5074\u304c\u6301\u3064\u306e\u306f<strong>\u300c\u59d4\u8b72\u5148\u306eNS\u60c5\u5831\u3060\u3051\u300d<\/strong>\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">CNAME\u306f\u89aa\u30c9\u30e1\u30a4\u30f3\u5074\u306b\u767b\u9332\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\uff1f<\/h2>\n\n\n\n<p>\u7d50\u8ad6\u304b\u3089\u8a00\u3046\u3068\u3001\u4eca\u56de\u306e\u3088\u3046\u306b <strong>NS\u59d4\u8b72\u3092\u884c\u3046\u69cb\u6210\u3067\u3042\u308c\u3070\u3001\u89aa\u30c9\u30e1\u30a4\u30f3\u5074\u306bCNAME\u3092\u767b\u9332\u3057\u3066\u3082\u3089\u3046\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093<\/strong>\u3002<\/p>\n\n\n\n<p>\u89aa\u30c9\u30e1\u30a4\u30f3\u5074\u304c\u6301\u3064\u3079\u304d\u60c5\u5831\u306f\u3001<code>dev.example.com<\/code> \u306e\u7ba1\u7406\u5148\uff08\uff1d\u59d4\u8b72\u5148\u306e\u6a29\u5a01DNS\uff09\u3092\u793a\u3059 <strong>NS\u30ec\u30b3\u30fc\u30c9<\/strong>\u3060\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p><code>dev.example.com<\/code> \u914d\u4e0b\u306e\u5177\u4f53\u7684\u306a\u30ec\u30b3\u30fc\u30c9\uff08A \/ CNAME \/ TXT \u306a\u3069\uff09\u306f\u3001\u59d4\u8b72\u5148\u3067\u3042\u308b <strong>Route 53 \u306e\u30db\u30b9\u30c8\u30be\u30fc\u30f3\u5074\u3067\u7ba1\u7406<\/strong>\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305f\u3068\u3048\u3070 <code>app.dev.example.com<\/code> \u3092 ALB \u306b\u5411\u3051\u305f\u3044\u5834\u5408\u306f\u3001Route 53 \u306e\u30db\u30b9\u30c8\u30be\u30fc\u30f3\u306b<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>app.dev.example.com<\/code> \u2192 <code>xxxx.elb.amazonaws.com<\/code>\uff08CNAME \u307e\u305f\u306f ALIAS\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u3092\u767b\u9332\u3059\u308c\u3070\u5b8c\u7d50\u3057\u307e\u3059\u3002<br><br>\u89aa\u30c9\u30e1\u30a4\u30f3\u5074\u306f\u300c\u3069\u3053\u306b\u59d4\u8b72\u3059\u308b\u304b\u300d\u3055\u3048\u5206\u304b\u3063\u3066\u3044\u308c\u3070\u3088\u304f\u3001\u914d\u4e0b\u306e\u30ec\u30b3\u30fc\u30c9\u306e\u5b58\u5728\u3092\u500b\u5225\u306b\u628a\u63e1\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h1>\n\n\n\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u3001<strong>\u300c\u624b\u9806\u901a\u308a\u306b\u8a2d\u5b9a\u3059\u308c\u3070\u52d5\u3044\u305f\u304c\u3001\u4ed5\u7d44\u307f\u304c\u3088\u304f\u5206\u304b\u3089\u306a\u3044\u300d<\/strong>\u3068\u3044\u3046\u72b6\u614b\u3092\u89e3\u6d88\u3059\u308b\u305f\u3081\u3001DNS\u306e\u57fa\u672c\u3068NS\u59d4\u8b72\u306e\u4ed5\u7d44\u307f\u3092\u6574\u7406\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p>\u30dd\u30a4\u30f3\u30c8\u306f\u3001DNS\u3092\u5358\u306a\u308b\u8a2d\u5b9a\u9805\u76ee\u306e\u96c6\u5408\u3068\u3057\u3066\u6349\u3048\u308b\u306e\u3067\u306f\u306a\u304f\u3001<br><strong>\u540d\u524d\u89e3\u6c7a\u304c\u3069\u306e\u3088\u3046\u306b\u9032\u307f\u3001\u3069\u306e\u30ec\u30b3\u30fc\u30c9\u304c\u3069\u306e\u5f79\u5272\u3092\u62c5\u3063\u3066\u3044\u308b\u306e\u304b<\/strong>\u3092\u6d41\u308c\u306e\u4e2d\u3067\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u7279\u306b\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u904b\u7528\u306b\u304a\u3044\u3066\u306f\u3001<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u3069\u3053\u304c\u6a29\u5a01DNS\u306b\u306a\u308b\u306e\u304b<\/strong><\/li>\n\n\n\n<li><strong>\u3069\u306e\u30be\u30fc\u30f3\u3092\u8ab0\u304c\u7ba1\u7406\u3059\u308b\u306e\u304b<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\u3092\u610f\u8b58\u3059\u308b\u3053\u3068\u3067\u3001<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u89aa\u30c9\u30e1\u30a4\u30f3\u5074\u306b\u4f9d\u983c\u3059\u3079\u304d\u5185\u5bb9\u306f <strong>NS\u30ec\u30b3\u30fc\u30c9\u306e\u307f<\/strong><\/li>\n\n\n\n<li>A \/ CNAME \/ TXT \u306a\u3069\u306e\u5177\u4f53\u7684\u306a\u30ec\u30b3\u30fc\u30c9\u306f <strong>\u59d4\u8b72\u5148\uff08Route 53\uff09\u3067\u7ba1\u7406\u3059\u308b<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\u3068\u3044\u3046\u6574\u7406\u304c\u81ea\u7136\u306b\u5c0e\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<br>\u300cCNAME\u304c\u4e0d\u8981\u300d\u3068\u3044\u3046\u3088\u308a\u3082\u3001\u300cCNAME\u3092\u767b\u9332\u3059\u308b\u5834\u6240\u304c\u89aa\u30c9\u30e1\u30a4\u30f3\u5074\u3067\u306f\u306a\u304f\u3001\u59d4\u8b72\u5148\u306b\u5909\u308f\u308b\u300d\u3068\u7406\u89e3\u3059\u308b\u306e\u304c\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u672c\u8a18\u4e8b\u3067\u306f\u8003\u3048\u65b9\u3068\u4ed5\u7d44\u307f\u306b\u30d5\u30a9\u30fc\u30ab\u30b9\u3057\u307e\u3057\u305f\u304c\u3001<br>\u5b9f\u969b\u306b <strong>Route 53 \u4e0a\u3067\u3069\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3059\u308b\u306e\u304b\uff08Hosted Zone\u306e\u4f5c\u6210\u3001NS\u30ec\u30b3\u30fc\u30c9\u306e\u78ba\u8a8d\u30fb\u4f9d\u983c\u3001ALIAS\/CNAME\u306e\u8a2d\u5b9a\u306a\u3069\uff09<\/strong> \u306b\u3064\u3044\u3066\u306f\u3001\u5225\u8a18\u4e8b\u3067\u624b\u9806\u30d9\u30fc\u30b9\u306b\u307e\u3068\u3081\u308b\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n\n\n\n<p>DNS\u3084\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u904b\u7528\u3092\u300c\u306a\u3093\u3068\u306a\u304f\u306e\u624b\u9806\u300d\u3067\u306f\u306a\u304f\u3001<br><strong>\u7406\u7531\u3092\u7406\u89e3\u3057\u305f\u3046\u3048\u3067\u8a2d\u8a08\u30fb\u4f9d\u983c\u3067\u304d\u308b\u72b6\u614b<\/strong>\u306b\u306a\u308b\u305f\u3081\u306e\u4e00\u52a9\u3068\u306a\u308c\u3070\u5e78\u3044\u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3069\u3046\u3082\u3001Cloud &amp; Data Platform\u30c1\u30fc\u30e0\u306e\u570b\u5d8b\u3067\u3059\u3002\u4eca\u56de\u306f\u3001Route 53\u3067\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u904b\u7528\u3092\u3059\u308b\u524d\u63d0\u3068\u3057\u3066\u3001DNS\u306e\u57fa\u672c\u3068NS\u59d4\u8b72\u306e\u4ed5\u7d44\u307f\u3092\u6574\u7406\u3057\u307e\u3059\u3002 \u76ee\u6b21 \u57f7\u7b46\u306e\u7d4c\u7def \u62c5\u5f53\u6848\u4ef6\u3067\u69cb\u7bc9\u3057\u3066\u3044 [&#8230;]<\/p>\n","protected":false},"author":221,"featured_media":81820,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[98,1106,1014],"tags":[],"class_list":["post-81765","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aws","category-s-kunishima","category-glossary"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>CNAME\u306f\u4e0d\u8981\uff1fRoute53\u3067\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3092\u904b\u7528\u3059\u308b\u3068\u304d\u306b\u77e5\u3063\u3066\u304a\u304d\u305f\u3044DNS\u306e\u57fa\u672c - Tech Blog\uff5c\u30af\u30ea\u30a8\u30fc\u30b7\u30e7\u30f3\u30e9\u30a4\u30f3<\/title>\n<meta name=\"description\" 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