{"id":6141,"date":"2025-10-04T15:56:02","date_gmt":"2025-10-04T06:56:02","guid":{"rendered":"https:\/\/sky-peace.net\/?p=6141"},"modified":"2025-10-04T15:56:02","modified_gmt":"2025-10-04T06:56:02","slug":"dns-zone","status":"publish","type":"post","link":"https:\/\/sky-peace.net\/certified\/dns-zone\/","title":{"rendered":"DNS\u30be\u30fc\u30f3\u60c5\u5831\u306e\u66f8\u304d\u65b9\u3092\u4e00\u767a\u6574\u7406\uff1a\u30db\u30b9\u30c8\u540d\u30fbFQDN\u30fbIP\u3092\u3044\u3064\u4f7f\u3046\uff1f"},"content":{"rendered":"<article>\u300cDNS\u306e\u30be\u30fc\u30f3\u60c5\u5831\u300d\u3063\u3066\u805e\u304f\u3068\u3001\u306a\u3093\u3060\u304b\u5c02\u9580\u7684\u3067\u3080\u305a\u304b\u3057\u305d\u3046\u3067\u3059\u3088\u306d\u3002<br \/>\n\u3067\u3082\u5b9f\u306f\u3001\u3084\u3063\u3066\u3044\u308b\u3053\u3068\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u300c\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u306f\u3069\u306e\u30b5\u30fc\u30d0\u306b\u7e4b\u3052\u3070\u3044\u3044\u306e\u304b\uff1f\u300d\u3068\u3044\u3046\u4f4f\u6240\u9332\u3092\u307e\u3068\u3081\u3066\u3044\u308b\u3060\u3051\u3067\u3059\u3002<br \/>\n\u305f\u3068\u3048\u3070\u3001<code>www.example.com<\/code> \u3092\u898b\u306b\u884c\u304f\u3068\u304d\u306b\u300c\u3053\u306e\u540d\u524d\u306f192.0.2.10\u3068\u3044\u3046IP\u306e\u30b5\u30fc\u30d0\u3067\u3059\u3088\u300d\u3068\u6559\u3048\u3066\u304f\u308c\u308b\u306e\u304cA\u30ec\u30b3\u30fc\u30c9\u3002\u30e1\u30fc\u30eb\u3092\u9001\u308b\u3068\u304d\u306b\u300c\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u5b9b\u306e\u30e1\u30fc\u30eb\u306fmail.example.com\u3067\u53d7\u3051\u53d6\u308a\u307e\u3059\u3088\u300d\u3068\u6307\u5b9a\u3059\u308b\u306e\u304cMX\u30ec\u30b3\u30fc\u30c9\u3067\u3059\u3002<br \/>\n\u30be\u30fc\u30f3\u60c5\u5831\u306b\u306f\u3001\u3053\u3046\u3057\u305f\u300cWeb\u300d\u300c\u30e1\u30fc\u30eb\u300d\u300c\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u300d\u306a\u3069\u3001\u30c9\u30e1\u30a4\u30f3\u306b\u307e\u3064\u308f\u308b\u3042\u3089\u3086\u308b\u60c5\u5831\u304c\u4e00\u5143\u7684\u306b\u66f8\u304b\u308c\u3066\u3044\u307e\u3059\u3002<br \/>\n\u672c\u8a18\u4e8b\u3067\u306f\u3001\u307e\u305a\u30be\u30fc\u30f3\u60c5\u5831\u306b\u306f\u4f55\u3092\u8a18\u8f09\u3059\u308b\u306e\u304b\u3092\u6574\u7406\u3057\u3001\u3055\u3089\u306b\u30ec\u30b3\u30fc\u30c9\u3054\u3068\u306e\u66f8\u304d\u65b9\u30fb\u4f7f\u3044\u3069\u3053\u308d\u3092\u521d\u5fc3\u8005\u5411\u3051\u306b\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<section>\n<h2>\u305d\u3082\u305d\u3082\u30be\u30fc\u30f3\u60c5\u5831\u306b\u306f\u4f55\u3092\u8a18\u8f09\u3059\u308b\u306e\u304b\uff1f<\/h2>\n<p>\u30be\u30fc\u30f3\u60c5\u5831\u306b\u306f\u300c\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u95a2\u308f\u308b\u3059\u3079\u3066\u306e\u30ea\u30bd\u30fc\u30b9\u306e\u5b9a\u7fa9\u300d\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u306e\u8a2d\u5b9a\u3060\u3051\u3067\u306a\u304f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u591a\u5c90\u306b\u308f\u305f\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li><strong>\u30be\u30fc\u30f3\u7ba1\u7406\u60c5\u5831<\/strong>\uff1aSOA\u30ec\u30b3\u30fc\u30c9\uff08\u7ba1\u7406\u60c5\u5831\uff09\u3001NS\u30ec\u30b3\u30fc\u30c9\uff08\u6a29\u5a01\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\uff09<\/li>\n<li><strong>\u30db\u30b9\u30c8\u3068IP\u306e\u5bfe\u5fdc<\/strong>\uff1aA\/AAAA\u30ec\u30b3\u30fc\u30c9\uff08IPv4\/IPv6\u30a2\u30c9\u30ec\u30b9\uff09\u3001CNAME\u30ec\u30b3\u30fc\u30c9\uff08\u5225\u540d\u5b9a\u7fa9\uff09<\/li>\n<li><strong>\u30e1\u30fc\u30eb\u95a2\u9023<\/strong>\uff1aMX\u30ec\u30b3\u30fc\u30c9\uff08\u914d\u9001\u5148\uff09\u3001TXT\u30ec\u30b3\u30fc\u30c9\uff08SPF\/DKIM\/DMARC\u306a\u3069\u306e\u8ff7\u60d1\u30e1\u30fc\u30eb\u5bfe\u7b56\uff09<\/li>\n<li><strong>\u305d\u306e\u4ed6<\/strong>\uff1aSRV\u30ec\u30b3\u30fc\u30c9\uff08\u7279\u5b9a\u30b5\u30fc\u30d3\u30b9\u306e\u63a5\u7d9a\u5148\uff09\u3001CAA\u30ec\u30b3\u30fc\u30c9\uff08SSL\u8a3c\u660e\u66f8\u306e\u767a\u884c\u5236\u5fa1\uff09\u3001PTR\u30ec\u30b3\u30fc\u30c9\uff08\u9006\u5f15\u304d\uff09<\/li>\n<\/ul>\n<p>\u3064\u307e\u308a\u30be\u30fc\u30f3\u60c5\u5831\u306f\u300c\u30c9\u30e1\u30a4\u30f3\u306b\u95a2\u3059\u308b\u3059\u3079\u3066\u306e\u30ea\u30bd\u30fc\u30b9\u8f9e\u66f8\u300d\u3068\u8a00\u3048\u307e\u3059\u3002Web\u30b5\u30a4\u30c8\u3084\u30e1\u30fc\u30eb\u306e\u904b\u7528\u3060\u3051\u3067\u306a\u304f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3084\u8a3c\u660e\u66f8\u904b\u7528\u306b\u3082\u76f4\u7d50\u3059\u308b\u91cd\u8981\u306a\u30c7\u30fc\u30bf\u3067\u3059\u3002<\/p>\n<\/section>\n<section>\n<h2>\u307e\u305a\u306f\u7d50\u8ad6\uff1a\u4f55\u3092\u66f8\u3051\u3070\u3044\u3044\uff1f<\/h2>\n<p><strong>\u53f3\u8fba\u306bIP\u30a2\u30c9\u30ec\u30b9\u3092\u66f8\u304f\u306e\u306f A \/ AAAA \u3060\u3051<\/strong>\u3002<strong>CNAME \/ MX \/ NS \/ SOA \u306e\u53f3\u8fba\u306f\u5fc5\u305a\u30c9\u30e1\u30a4\u30f3\u540d\uff08FQDN\uff09<\/strong>\u3002\u5de6\u8fba\u306f\u57fa\u672c\u30db\u30b9\u30c8\u540d\uff08\u5fc5\u8981\u306b\u5fdc\u3058\u3066 <code>@<\/code> \u3084 FQDN\uff09\u3002<strong>FQDN\u306f\u672b\u5c3e\u30c9\u30c3\u30c8\uff08.\uff09\u63a8\u5968<\/strong>\u3067\u3059\u3002<\/p>\n<\/section>\n<section>\n<h2>\u30ec\u30b3\u30fc\u30c9\u7a2e\u5225\u3054\u3068\u306e\u66f8\u304d\u65b9\uff08\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\uff09<\/h2>\n<div style=\"overflow-x: auto;\">\n<table>\n<thead>\n<tr>\n<th>\u30ec\u30b3\u30fc\u30c9\u7a2e\u5225<\/th>\n<th>\u5de6\u8fba\uff08\u30ec\u30b3\u30fc\u30c9\u540d\uff09<\/th>\n<th>\u53f3\u8fba\uff08\u5024\uff09<\/th>\n<th>\u8a2d\u5b9a\u306e\u30dd\u30a4\u30f3\u30c8<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>A<\/strong><\/td>\n<td>\u30db\u30b9\u30c8\u540d \/ <code>@<\/code> \/ FQDN<\/td>\n<td><strong>IPv4\u30a2\u30c9\u30ec\u30b9<\/strong><\/td>\n<td>\u30b5\u30fc\u30d3\u30b9\u63d0\u4f9b\u30b5\u30fc\u30d0\u306eIPv4\u3092\u76f4\u6307\u5b9a<\/td>\n<\/tr>\n<tr>\n<td><strong>AAAA<\/strong><\/td>\n<td>\u30db\u30b9\u30c8\u540d \/ <code>@<\/code> \/ FQDN<\/td>\n<td><strong>IPv6\u30a2\u30c9\u30ec\u30b9<\/strong><\/td>\n<td>IPv6\u3067\u516c\u958b\u3059\u308b\u5834\u5408\u306f\u3053\u3061\u3089<\/td>\n<\/tr>\n<tr>\n<td><strong>CNAME<\/strong><\/td>\n<td>\u30db\u30b9\u30c8\u540d<\/td>\n<td><strong>FQDN\uff08\u672b\u5c3e\u30c9\u30c3\u30c8\u63a8\u5968\uff09<\/strong><\/td>\n<td>\u5225\u540d\u2192\u5b9f\u4f53\u30db\u30b9\u30c8\u3002\u53f3\u8fba\u306bIP\u306f\u4e0d\u53ef<\/td>\n<\/tr>\n<tr>\n<td><strong>MX<\/strong><\/td>\n<td><code>@<\/code>\uff08\u30c9\u30e1\u30a4\u30f3\u5168\u4f53\uff09\u3084\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3<\/td>\n<td><strong>FQDN\uff08\u672b\u5c3e\u30c9\u30c3\u30c8\u63a8\u5968\uff09<\/strong><\/td>\n<td>\u30e1\u30fc\u30eb\u914d\u9001\u5148\u30b5\u30fc\u30d0\u540d\u3092\u6307\u5b9a\uff08\u512a\u5148\u5ea6\u5fc5\u9808\uff09<\/td>\n<\/tr>\n<tr>\n<td><strong>NS<\/strong><\/td>\n<td><code>@<\/code>\uff08\u30be\u30fc\u30f3\u5168\u4f53\uff09\u3084\u30b5\u30d6\u30be\u30fc\u30f3\u540d<\/td>\n<td><strong>FQDN\uff08\u672b\u5c3e\u30c9\u30c3\u30c8\u63a8\u5968\uff09<\/strong><\/td>\n<td>\u6a29\u5a01DNS\u30b5\u30fc\u30d0\u306e\u30db\u30b9\u30c8\u540d<\/td>\n<\/tr>\n<tr>\n<td><strong>SOA<\/strong><\/td>\n<td><code>@<\/code>\uff08\u30be\u30fc\u30f3\u5168\u4f53\uff09<\/td>\n<td><strong>\u30d7\u30e9\u30a4\u30de\u30eaNS\u306eFQDN<\/strong>\uff0b<strong>\u7ba1\u7406\u8005\u30e1\u30fc\u30eb<\/strong>\uff08<code>@<\/code>\u2192<code>.<\/code>\uff09<\/td>\n<td>\u30b7\u30ea\u30a2\u30eb\u3084Refresh\/Retry\/Expire\/TTL\u3082\u3053\u3053\u3067\u5b9a\u7fa9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/section>\n<h2 data-start=\"84\" data-end=\"107\">&#x1f331; \u30be\u30fc\u30f3\u60c5\u5831 \u5404\u30ec\u30b3\u30fc\u30c9\u306e\u3084\u3055\u3057\u3044\u89e3\u8aac<\/h2>\n<h3 data-start=\"109\" data-end=\"134\">1. <strong data-start=\"115\" data-end=\"134\">SOA\u30ec\u30b3\u30fc\u30c9\uff08\u30be\u30fc\u30f3\u306e\u89aa\u7389\uff09<\/strong><\/h3>\n<ul data-start=\"135\" data-end=\"283\">\n<li data-start=\"135\" data-end=\"178\">\n<p data-start=\"137\" data-end=\"178\">\u30a4\u30e1\u30fc\u30b8\uff1a\u30af\u30e9\u30b9\u306e\u540d\u7c3f\u306b\u300c\u62c5\u4efb\u306e\u5148\u751f\u300d\u3068\u300c\u9023\u7d61\u30eb\u30fc\u30eb\u300d\u304c\u66f8\u3044\u3066\u3042\u308b\u3088\u3046\u306a\u3082\u306e\u3002<\/p>\n<\/li>\n<li data-start=\"179\" data-end=\"252\">\n<p data-start=\"181\" data-end=\"252\">\u3053\u3053\u306b\u306f\u300c\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u4e00\u756a\u8cac\u4efb\u3092\u6301\u3064\u30b5\u30fc\u30d0\uff08\u62c5\u4efb\uff09\u300d\u300c\u9023\u7d61\u5148\uff08\u5148\u751f\u306e\u30e1\u30fc\u30eb\uff09\u300d\u300c\u3044\u3064\u540d\u7c3f\u3092\u66f4\u65b0\u3057\u305f\u304b\uff08\u30b7\u30ea\u30a2\u30eb\u756a\u53f7\uff09\u300d\u306a\u3069\u304c\u66f8\u304b\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<li data-start=\"253\" data-end=\"283\">\n<p data-start=\"255\" data-end=\"283\">\u4ed6\u306e\u30b5\u30fc\u30d0\u306f\u3053\u308c\u3092\u898b\u3066\u300c\u66f4\u65b0\u3055\u308c\u305f\u304b\u306a\uff1f\u300d\u3068\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"290\" data-end=\"311\">2. <strong data-start=\"296\" data-end=\"311\">NS\u30ec\u30b3\u30fc\u30c9\uff08\u6848\u5185\u4fc2\uff09<\/strong><\/h3>\n<ul data-start=\"312\" data-end=\"405\">\n<li data-start=\"312\" data-end=\"326\">\n<p data-start=\"314\" data-end=\"326\">\u30a4\u30e1\u30fc\u30b8\uff1a\u53d7\u4ed8\u7a93\u53e3\u3002<\/p>\n<\/li>\n<li data-start=\"327\" data-end=\"369\">\n<p data-start=\"329\" data-end=\"369\">\u300c\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u3053\u3068\u3092\u77e5\u308a\u305f\u3051\u308c\u3070\u3001\u3053\u306e\u30b5\u30fc\u30d0\u306b\u805e\u3044\u3066\u306d\u300d\u3068\u6559\u3048\u3066\u304f\u308c\u308b\u4eba\u3002<\/p>\n<\/li>\n<li data-start=\"370\" data-end=\"405\">\n<p data-start=\"372\" data-end=\"405\">\u30be\u30fc\u30f3\u306b\u306f\u5fc5\u305a\u66f8\u3044\u3066\u3001\u5916\u90e8\u306e\u4eba\u306b\u300c\u6b63\u3057\u3044\u554f\u3044\u5408\u308f\u305b\u5148\u300d\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"412\" data-end=\"438\">3. <strong data-start=\"418\" data-end=\"438\">A \/ AAAA\u30ec\u30b3\u30fc\u30c9\uff08\u4f4f\u6240\uff09<\/strong><\/h3>\n<ul data-start=\"439\" data-end=\"567\">\n<li data-start=\"439\" data-end=\"460\">\n<p data-start=\"441\" data-end=\"460\">\u30a4\u30e1\u30fc\u30b8\uff1a\u4eba\u306e\u540d\u524d\u3068\u4f4f\u6240\u306e\u5bfe\u5fdc\u8868\u3002<\/p>\n<\/li>\n<li data-start=\"461\" data-end=\"496\">\n<p data-start=\"463\" data-end=\"496\">A \u2192 IPv4\u4f4f\u6240\uff08\u53e4\u304f\u304b\u3089\u3042\u308b4\u6841\u306e\u90f5\u4fbf\u756a\u53f7\u307f\u305f\u3044\u306a\u3082\u306e\uff09<\/p>\n<\/li>\n<li data-start=\"497\" data-end=\"523\">\n<p data-start=\"499\" data-end=\"523\">AAAA \u2192 IPv6\u4f4f\u6240\uff08\u65b0\u3057\u3044\u9577\u3044\u4f4f\u6240\uff09<\/p>\n<\/li>\n<li data-start=\"524\" data-end=\"567\">\n<p data-start=\"526\" data-end=\"567\">\u4f8b\uff1a\u300c<a class=\"decorated-link cursor-pointer\" target=\"_new\" rel=\"noopener\">www.example.com<\/a> \u306f 192.0.2.10 \u306b\u4f4f\u3093\u3067\u308b\u3088\u300d<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"574\" data-end=\"598\">4. <strong data-start=\"580\" data-end=\"598\">CNAME\u30ec\u30b3\u30fc\u30c9\uff08\u3042\u3060\u540d\uff09<\/strong><\/h3>\n<ul data-start=\"599\" data-end=\"743\">\n<li data-start=\"599\" data-end=\"633\">\n<p data-start=\"601\" data-end=\"633\">\u30a4\u30e1\u30fc\u30b8\uff1a\u53cb\u9054\u306b\u300c\u305f\u308d\u3046\uff1d\u5c71\u7530\u592a\u90ce\u300d\u3068\u547c\u3073\u540d\u3092\u767b\u9332\u3059\u308b\u611f\u3058\u3002<\/p>\n<\/li>\n<li data-start=\"634\" data-end=\"690\">\n<p data-start=\"636\" data-end=\"690\">\u300cblog.example.com \u306f \u5b9f\u306f ghs.google.com \u3063\u3066\u4eba\u3060\u3088\u300d\u3068\u3044\u3046\u5225\u540d\u5b9a\u7fa9\u3002<\/p>\n<\/li>\n<li data-start=\"691\" data-end=\"743\">\n<p data-start=\"693\" data-end=\"743\">\u6ce8\u610f\uff1a\u540c\u3058\u4eba\u306b\u300c\u4f4f\u6240\u300d\u3068\u300c\u3042\u3060\u540d\u300d\u3092\u540c\u6642\u306b\u66f8\u3044\u3066\u306f\u3044\u3051\u306a\u3044\uff08CNAME\u3068A\/AAAA\u306e\u4f75\u8a18\u306fNG\uff09\u3002<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"750\" data-end=\"776\">5. <strong data-start=\"756\" data-end=\"776\">MX\u30ec\u30b3\u30fc\u30c9\uff08\u90f5\u4fbf\u5c40\u306e\u4ed5\u5206\u3051\u5148\uff09<\/strong><\/h3>\n<ul data-start=\"777\" data-end=\"904\">\n<li data-start=\"777\" data-end=\"797\">\n<p data-start=\"779\" data-end=\"797\">\u30a4\u30e1\u30fc\u30b8\uff1a\u90f5\u4fbf\u7269\u3092\u53d7\u3051\u53d6\u308b\u7a93\u53e3\u3002<\/p>\n<\/li>\n<li data-start=\"798\" data-end=\"853\">\n<p data-start=\"800\" data-end=\"853\">\u300cexample.com\u5b9b\u306e\u30e1\u30fc\u30eb\u306f mail.example.com \u304c\u53d7\u3051\u53d6\u308a\u307e\u3059\u300d\u3068\u66f8\u3044\u3066\u304a\u304f\u3002<\/p>\n<\/li>\n<li data-start=\"854\" data-end=\"904\">\n<p data-start=\"856\" data-end=\"904\">\u8907\u6570\u66f8\u3051\u3070\u300c\u512a\u5148\u5ea6\u300d\u304c\u3064\u3051\u3089\u308c\u3066\u3001\u30e1\u30a4\u30f3\u90f5\u4fbf\u5c40\u304c\u6b62\u307e\u3063\u3066\u3044\u3066\u3082\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u90f5\u4fbf\u5c40\u306b\u914d\u9054\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"911\" data-end=\"934\">6. <strong data-start=\"917\" data-end=\"934\">TXT\u30ec\u30b3\u30fc\u30c9\uff08\u4ed8\u7b8b\u30e1\u30e2\uff09<\/strong><\/h3>\n<ul data-start=\"935\" data-end=\"1066\">\n<li data-start=\"935\" data-end=\"957\">\n<p data-start=\"937\" data-end=\"957\">\u30a4\u30e1\u30fc\u30b8\uff1a\u4f4f\u6240\u9332\u306e\u6a2a\u306b\u8cbc\u3089\u308c\u305f\u30e1\u30e2\u3002<\/p>\n<\/li>\n<li data-start=\"958\" data-end=\"1037\">\n<p data-start=\"960\" data-end=\"1037\">\u3053\u3053\u306b\u300c\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u30e1\u30fc\u30eb\u3092\u9001\u3063\u3066\u3044\u3044\u30b5\u30fc\u30d0\u306f\u3053\u308c\u3060\u3051\uff08SPF\uff09\u300d\u3068\u304b\u300c\u3053\u306e\u30e1\u30fc\u30eb\u306b\u306f\u96fb\u5b50\u7f72\u540d\u304c\u4ed8\u3044\u3066\u308b\uff08DKIM\uff09\u300d\u306a\u3069\u306e\u30eb\u30fc\u30eb\u3092\u66f8\u304d\u8fbc\u3081\u307e\u3059\u3002<\/p>\n<\/li>\n<li data-start=\"1038\" data-end=\"1066\">\n<p data-start=\"1040\" data-end=\"1066\">\u6700\u8fd1\u306fGoogle\u3084AWS\u306e\u6240\u6709\u78ba\u8a8d\u306b\u3082\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1073\" data-end=\"1095\">7. <strong data-start=\"1079\" data-end=\"1095\">PTR\u30ec\u30b3\u30fc\u30c9\uff08\u9006\u5f15\u304d\uff09<\/strong><\/h3>\n<ul data-start=\"1096\" data-end=\"1202\">\n<li data-start=\"1096\" data-end=\"1113\">\n<p data-start=\"1098\" data-end=\"1113\">\u30a4\u30e1\u30fc\u30b8\uff1a\u96fb\u8a71\u5e33\u306e\u9006\u5f15\u304d\u3002<\/p>\n<\/li>\n<li data-start=\"1114\" data-end=\"1161\">\n<p data-start=\"1116\" data-end=\"1161\">\u3075\u3064\u3046\u306f\u300c\u540d\u524d \u2192 \u96fb\u8a71\u756a\u53f7\u300d\u3060\u3051\u3069\u3001\u9006\u306b\u300c\u96fb\u8a71\u756a\u53f7 \u2192 \u540d\u524d\u300d\u3092\u8abf\u3079\u305f\u3044\u3068\u304d\u306b\u5fc5\u8981\u3002<\/p>\n<\/li>\n<li data-start=\"1162\" data-end=\"1202\">\n<p data-start=\"1164\" data-end=\"1202\">\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u3067\u306f\u300c\u3053\u306eIP\u306e\u4eba\u306f\u672c\u5f53\u306b\u305d\u306e\u540d\u524d\uff1f\u300d\u3068\u30c1\u30a7\u30c3\u30af\u3055\u308c\u308b\u306e\u3067\u5927\u4e8b\u3002<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1209\" data-end=\"1236\">8. <strong data-start=\"1215\" data-end=\"1236\">SRV\u30ec\u30b3\u30fc\u30c9\uff08\u30b5\u30fc\u30d3\u30b9\u306e\u6848\u5185\u677f\uff09<\/strong><\/h3>\n<ul data-start=\"1237\" data-end=\"1346\">\n<li data-start=\"1237\" data-end=\"1281\">\n<p data-start=\"1239\" data-end=\"1281\">\u30a4\u30e1\u30fc\u30b8\uff1a\u5f79\u6240\u306e\u7dcf\u5408\u6848\u5185\u306b\u3042\u308b\u300c\u25cb\u25cb\u7a93\u53e3\u306f2\u968e\u306eA\u30ab\u30a6\u30f3\u30bf\u30fc\u3067\u3059\u300d\u3068\u3044\u3046\u6848\u5185\u677f\u3002<\/p>\n<\/li>\n<li data-start=\"1282\" data-end=\"1315\">\n<p data-start=\"1284\" data-end=\"1315\">\u3069\u306e\u30b5\u30fc\u30d0\u306b\u3069\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u3042\u308b\u304b\u3092\u3001\u30dd\u30fc\u30c8\u756a\u53f7\u8fbc\u307f\u3067\u6307\u5b9a\u3002<\/p>\n<\/li>\n<li data-start=\"1316\" data-end=\"1346\">\n<p data-start=\"1318\" data-end=\"1346\">\u4f8b\uff1aSIP\u96fb\u8a71\u3001\u30c1\u30e3\u30c3\u30c8\uff08XMPP\uff09\u306a\u3069\u3067\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ul>\n<h3 data-start=\"1353\" data-end=\"1381\">9. <strong data-start=\"1359\" data-end=\"1381\">CAA\u30ec\u30b3\u30fc\u30c9\uff08\u8a3c\u660e\u66f8\u306e\u767a\u884c\u8a31\u53ef\u8a3c\uff09<\/strong><\/h3>\n<ul data-start=\"1382\" data-end=\"1475\">\n<li data-start=\"1382\" data-end=\"1398\">\n<p data-start=\"1384\" data-end=\"1398\">\u30a4\u30e1\u30fc\u30b8\uff1a\u5b9f\u5370\u306e\u767b\u9332\u7c3f\u3002<\/p>\n<\/li>\n<li data-start=\"1399\" data-end=\"1443\">\n<p data-start=\"1401\" data-end=\"1443\">\u300c\u3053\u306e\u5bb6\uff08\u30c9\u30e1\u30a4\u30f3\uff09\u306e\u9375\uff08\u8a3c\u660e\u66f8\uff09\u3092\u4f5c\u3063\u3066\u3044\u3044\u306e\u306f\u3007\u3007\u4f1a\u793e\u3060\u3051\u3067\u3059\u300d\u3068\u5ba3\u8a00\u3059\u308b\u3002<\/p>\n<\/li>\n<li data-start=\"1444\" data-end=\"1475\">\n<p data-start=\"1446\" data-end=\"1475\">\u3053\u308c\u304c\u3042\u308b\u3068\u3001\u602a\u3057\u3044\u4f1a\u793e\u304c\u52dd\u624b\u306b\u8a3c\u660e\u66f8\u3092\u4f5c\u308b\u306e\u3092\u9632\u3052\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>\u5404\u30ec\u30b3\u30fc\u30c9\u306e\u307e\u3068\u3081<\/h3>\n<ul>\n<li><strong>SOA<\/strong>\uff1a\u30af\u30e9\u30b9\u306e\u62c5\u4efb\u306e\u5148\u751f\u3002\u30be\u30fc\u30f3\u306e\u8cac\u4efb\u8005\u30b5\u30fc\u30d0\u3084\u66f4\u65b0\u30eb\u30fc\u30eb\u3092\u793a\u3059\u3002<\/li>\n<li><strong>NS<\/strong>\uff1a\u53d7\u4ed8\u7a93\u53e3\u3002\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u6848\u5185\u5f79\u3068\u306a\u308b\u30b5\u30fc\u30d0\u3092\u6307\u5b9a\u3002<\/li>\n<li><strong>A\/AAAA<\/strong>\uff1a\u4f4f\u6240\u9332\u3002\u30db\u30b9\u30c8\u540d\u306b\u5bfe\u3057\u3066IPv4\/IPv6\u306e\u4f4f\u6240\u3092\u5272\u308a\u5f53\u3066\u308b\u3002<\/li>\n<li><strong>CNAME<\/strong>\uff1a\u3042\u3060\u540d\u3002\u5225\u540d\u3092\u672c\u540d\u306b\u8ee2\u9001\u3059\u308b\u4ed5\u7d44\u307f\u3002<\/li>\n<li><strong>MX<\/strong>\uff1a\u90f5\u4fbf\u5c40\u3002\u30e1\u30fc\u30eb\u306e\u4ed5\u5206\u3051\u5148\u3092\u6c7a\u3081\u308b\u3002<\/li>\n<li><strong>TXT<\/strong>\uff1a\u4ed8\u7b8b\u30e1\u30e2\u3002SPF\/DKIM\/DMARC\u3084\u5916\u90e8\u30b5\u30fc\u30d3\u30b9\u306e\u78ba\u8a8d\u7528\u3002<\/li>\n<li><strong>PTR<\/strong>\uff1a\u9006\u5f15\u304d\u96fb\u8a71\u5e33\u3002IP\u304b\u3089\u540d\u524d\u3092\u8abf\u3079\u308b\u3002<\/li>\n<li><strong>SRV<\/strong>\uff1a\u6848\u5185\u677f\u3002\u3069\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u3069\u3053\u3067\u52d5\u3044\u3066\u3044\u308b\u304b\u3092\u793a\u3059\u3002<\/li>\n<li><strong>CAA<\/strong>\uff1a\u5b9f\u5370\u767b\u9332\u3002\u8a3c\u660e\u66f8\u3092\u767a\u884c\u3067\u304d\u308b\u4f1a\u793e\u3092\u5236\u5fa1\u3059\u308b\u3002<\/li>\n<\/ul>\n<section>\n<h2>CNAME\u30ec\u30b3\u30fc\u30c9\u306f\u3069\u3093\u306a\u6642\u306b\u4f7f\u3046\uff1f\u5177\u4f53\u4f8b<\/h2>\n<p>CNAME\u30ec\u30b3\u30fc\u30c9\u306f\u300c\u5225\u540d \u2192 \u672c\u540d\u300d\u306e\u5bfe\u5fdc\u3092\u4f5c\u308b\u3082\u306e\u3067\u3059\u3002\u5177\u4f53\u7684\u306a\u5229\u7528\u30b7\u30fc\u30f3\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<h3>1. \u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u3092\u5916\u90e8\u30b5\u30fc\u30d3\u30b9\u306b\u5411\u3051\u305f\u3044\u3068\u304d<\/h3>\n<pre><code>blog.example.com.   IN CNAME   ghs.google.com.<\/code><\/pre>\n<p>\u30d6\u30ed\u30b0\u3092Google\u306eBlogger\u3067\u904b\u7528\u3059\u308b\u4f8b\u3002\u81ea\u5206\u306e\u30c9\u30e1\u30a4\u30f3\u3092\u4f7f\u3044\u306a\u304c\u3089\u5916\u90e8\u30b5\u30fc\u30d3\u30b9\u306b\u7d10\u3065\u3051\u3089\u308c\u308b\u3002<\/p>\n<h3>2. www \u3042\u308a\uff0f\u306a\u3057\u3092\u63c3\u3048\u305f\u3044\u3068\u304d<\/h3>\n<pre><code>www.example.com.    IN CNAME   example.com.<\/code><\/pre>\n<p>\u300cwww\u300d\u3092\u4ed8\u3051\u3066\u3082\u4ed8\u3051\u306a\u304f\u3066\u3082\u540c\u3058\u30b5\u30a4\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3055\u305b\u305f\u3044\u3068\u304d\u3002<\/p>\n<h3>3. CDN\u3084\u30ed\u30fc\u30c9\u30d0\u30e9\u30f3\u30b5\u30fc\u3092\u4f7f\u3046\u3068\u304d<\/h3>\n<pre><code>static.example.com.   IN CNAME   d12345abcdef.cloudfront.net.<\/code><\/pre>\n<p>\u9577\u3044\u30af\u30e9\u30a6\u30c9\u30b5\u30fc\u30d3\u30b9\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u3001\u81ea\u5206\u306e\u5206\u304b\u308a\u3084\u3059\u3044\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u306b\u7f6e\u304d\u63db\u3048\u3066\u5229\u7528\u3002<\/p>\n<h3>4. \u30e1\u30fc\u30eb\u8a8d\u8a3c\uff08DKIM\u306a\u3069\uff09\u3067\u5fc5\u8981\u306a\u3068\u304d<\/h3>\n<pre><code>google._domainkey.example.com.  IN CNAME  google.com.dkimkey.gappssmtp.com.<\/code><\/pre>\n<p>\u5916\u90e8\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u304c\u6307\u5b9a\u3059\u308b\u516c\u958b\u9375\u30db\u30b9\u30c8\u540d\u306b\u8ee2\u9001\u3059\u308b\u4f8b\u3002<\/p>\n<p><strong>\u307e\u3068\u3081\u308b\u3068\uff1a<\/strong>CNAME\u306f\u300c\u3053\u306e\u540d\u524d\u306f\u5b9f\u306f\u5225\u306e\u540d\u524d\u3067\u3059\u300d\u3068\u8a00\u3044\u305f\u3044\u3068\u304d\u306b\u4f7f\u3046\u3002\u7279\u306b\u5916\u90e8\u30b5\u30fc\u30d3\u30b9\u3084\u30af\u30e9\u30a6\u30c9\u5229\u7528\u6642\u306b\u5fc5\u9808\u3002<\/p>\n<\/section>\n<section>\n<h2>\u5177\u4f53\u4f8b\uff1a\u6700\u5c0f\u69cb\u6210\u306e\u30be\u30fc\u30f3\u65ad\u7247<\/h2>\n<pre><code>$TTL 3600\n@        IN SOA  ns1.example.net. hostmaster.example.net. (\n                 2025100401 ; Serial\n                 3600       ; Refresh\n                 1800       ; Retry\n                 1209600    ; Expire\n                 86400 )    ; Minimum TTL\n@        IN NS   ns1.example.net.\n@        IN NS   ns2.example.net.\n\n; Web\n@        IN A    192.0.2.1\nwww      IN A    192.0.2.10\nwww6     IN AAAA 2001:db8::10\nblog     IN CNAME ghs.google.com.\n\n; Mail\n@        IN MX   10 mail.example.com.\nmail     IN A    192.0.2.20\n<\/code><\/pre>\n<\/section>\n<section>\n<h2>\u30cf\u30de\u308a\u30dd\u30a4\u30f3\u30c8\u3068\u56de\u907f\u7b56<\/h2>\n<h3>1) \u672b\u5c3e\u30c9\u30c3\u30c8\u5fd8\u308c<\/h3>\n<p>\u53f3\u8fba\u306b <code>foo.bar.com<\/code> \u3068\u66f8\u304f\u3068 <code>foo.bar.com.example.com.<\/code> \u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002FQDN\u306f<strong>\u672b\u5c3e\u30c9\u30c3\u30c8<\/strong>\u3092\u4ed8\u3051\u307e\u3057\u3087\u3046\u3002<\/p>\n<h3>2) CNAME\u3068\u4ed6\u30ec\u30b3\u30fc\u30c9\u306e\u4f75\u8a18\u7981\u6b62<\/h3>\n<p>\u540c\u3058\u30e9\u30d9\u30eb\u306bCNAME\u3068A\u3092\u540c\u6642\u306b\u66f8\u3044\u3066\u306f\u3044\u3051\u307e\u305b\u3093\u3002CNAME\u306f\u552f\u4e00\u306e\u5b9a\u7fa9\u3067\u3059\u3002<\/p>\n<h3>3) MX\u306e\u53f3\u8fba\u306f\u5fc5\u305a\u30db\u30b9\u30c8\u540d<\/h3>\n<p>MX\u306e\u53f3\u8fba\u306bIP\u306f\u66f8\u3051\u307e\u305b\u3093\u3002\u5fc5\u305aA\/AAAA\u3067\u89e3\u6c7a\u3067\u304d\u308bFQDN\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n<\/section>\n<section>\n<h2>\u7528\u9014\u5225\u30df\u30cb\u30c1\u30fc\u30c8\u30b7\u30fc\u30c8<\/h2>\n<ul>\n<li><strong>Web\u3092IP\u76f4\u6307\u5b9a<\/strong>\uff1a<code>www IN A 203.0.113.10<\/code><\/li>\n<li><strong>\u5225\u540d\u3067\u4ed6\u793eCDN\u3078<\/strong>\uff1a<code>cdn IN CNAME foo.cdnprovider.net.<\/code><\/li>\n<li><strong>\u30e1\u30fc\u30eb\u53d7\u4fe1<\/strong>\uff1a<code>@ IN MX 10 mail.example.com.<\/code> \uff0b <code>mail IN A ...<\/code><\/li>\n<li><strong>IPv6\u516c\u958b<\/strong>\uff1a<code>www IN AAAA 2001:db8::10<\/code><\/li>\n<li><strong>\u30b5\u30d6\u30c9\u30e1\u30a4\u30f3\u59d4\u4efb<\/strong>\uff1a<code>dev IN NS ns1.dev-dns.net.<\/code><\/li>\n<\/ul>\n<\/section>\n<section>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>\u30be\u30fc\u30f3\u60c5\u5831\u306f\u300c\u305d\u306e\u30c9\u30e1\u30a4\u30f3\u306e\u3059\u3079\u3066\u306e\u30ea\u30bd\u30fc\u30b9\u8f9e\u66f8\u300d\u3002<br \/>\n<strong>A\/AAAA\u3060\u3051\u304cIP\u6307\u5b9a\u3001CNAME\/MX\/NS\/SOA\u306fFQDN\u6307\u5b9a<\/strong>\u3001FQDN\u306f<strong>\u672b\u5c3e\u30c9\u30c3\u30c8<\/strong>\u304c\u5b89\u5168\u3001\u5de6\u8fba\u306f\u57fa\u672c<strong>\u30db\u30b9\u30c8\u540d or <code>@<\/code><\/strong>\u3002<br \/>\nCNAME\u306f\u7279\u306b\u5916\u90e8\u30b5\u30fc\u30d3\u30b9\u9023\u643a\u3084\u5225\u540d\u306e\u7d71\u4e00\u3067\u6b20\u304b\u305b\u307e\u305b\u3093\u3002\u3053\u308c\u3092\u62bc\u3055\u3048\u308c\u3070DNS\u306e\u30be\u30fc\u30f3\u7de8\u96c6\u306e\u5927\u534a\u306e\u6df7\u4e71\u306f\u89e3\u6d88\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/section>\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>\u300cDNS\u306e\u30be\u30fc\u30f3\u60c5\u5831\u300d\u3063\u3066\u805e\u304f\u3068\u3001\u306a\u3093\u3060\u304b\u5c02\u9580\u7684\u3067\u3080\u305a\u304b\u3057\u305d\u3046\u3067\u3059\u3088\u306d\u3002 \u3067\u3082\u5b9f\u306f\u3001\u3084\u3063\u3066\u3044\u308b\u3053\u3068\u306f\u30b7\u30f3\u30d7\u30eb\u3067\u300c\u3053\u306e\u30c9\u30e1\u30a4\u30f3\u306f\u3069\u306e\u30b5\u30fc\u30d0\u306b\u7e4b\u3052\u3070\u3044\u3044\u306e\u304b\uff1f\u300d\u3068\u3044\u3046\u4f4f\u6240\u9332\u3092\u307e\u3068\u3081\u3066\u3044\u308b\u3060\u3051\u3067\u3059\u3002 \u305f\u3068\u3048 &#8230; 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