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class=\"wp-block-paragraph\">\u7570\u306a\u308b\u30e6\u30fc\u30b6\u30fc\u306f\u7570\u306a\u308b\u518d\u5e30\u578bDNS\u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u540c\u3058\u4e16\u5e2f\u306e\u4eba\u3005\u3067\u3082\u3001\u30c7\u30d0\u30a4\u30b9\u304c\u7570\u306a\u308bDNS\u30b5\u30fc\u30d3\u30b9\u3001VPN\u3001\u30e2\u30d0\u30a4\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001\u307e\u305f\u306f\u30ed\u30fc\u30ab\u30eb\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u7570\u306a\u308b\u56de\u7b54\u3092\u8868\u793a\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DNS\u306b\u304a\u3051\u308bTTL\u3068\u306f\u4f55\u3067\u3059\u304b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">TTL\u306fTime To Live\u306e\u7565\u3067\u3059\u3002 <strong>\u6709\u52b9\u671f\u9593<\/strong>. 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class=\"wp-block-paragraph\">\u5909\u66f4\u5f8c\u306b\u91cd\u8981\u306b\u306a\u308bTTL\u306f\u3001\u901a\u5e38\u3001\u30ea\u30be\u30eb\u30d0\u30fc\u304c\u3059\u3067\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3066\u3044\u308b\u53e4\u3044\u30ec\u30b3\u30fc\u30c9\u306eTTL\u3067\u3059\u3002\u30ec\u30b3\u30fc\u30c9\u3092\u5909\u66f4\u3059\u308b\u76f4\u524d\u306bTTL\u3092\u4e0b\u3052\u3066\u3082\u3001\u4ee5\u524d\u306e\u3088\u308a\u9ad8\u3044TTL\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3066\u3044\u305f\u30ea\u30be\u30eb\u30d0\u30fc\u306e\u5f85\u3061\u6642\u9593\u3092\u77ed\u7e2e\u3067\u304d\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30ea\u30be\u30eb\u30d0\u30fc\u306f\u3001\u5143\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u671f\u9593\u304c\u671f\u9650\u5207\u308c\u306b\u306a\u308b\u307e\u3067\u3001\u53e4\u3044\u5fdc\u7b54\u3092\u4f7f\u3044\u7d9a\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p 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class=\"wp-block-paragraph\">\u6700\u3082\u4e00\u822c\u7684\u306a\u7406\u7531\u306f\u3001\u30ea\u30be\u30eb\u30d0\u30fc\u304c\u7570\u306a\u308b\u30ad\u30e3\u30c3\u30b7\u30e5\u30b3\u30d4\u30fc\u3092\u6301\u3063\u3066\u3044\u308b\u3053\u3068\u3067\u3059\u3002\u4e00\u90e8\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u3059\u3067\u306b\u30ec\u30b3\u30fc\u30c9\u3092\u66f4\u65b0\u3057\u3066\u3044\u308b\u4e00\u65b9\u3067\u3001\u4ed6\u306e\u30b7\u30b9\u30c6\u30e0\u306f\u6709\u52b9\u671f\u9650\u306e\u5207\u308c\u3066\u3044\u306a\u3044\u56de\u7b54\u3092\u4f7f\u7528\u3057\u7d9a\u3051\u3066\u3044\u307e\u3059\u3002\u307e\u305f\u3001\u30ea\u30be\u30eb\u30d0\u30fc\u306f\u72ec\u81ea\u306e\u66f4\u65b0\u52d5\u4f5c\u3092\u9069\u7528\u3057\u305f\u308a\u3001\u30ec\u30b3\u30fc\u30c9\u304c\u5b58\u5728\u3057\u306a\u3044\u3053\u3068\u3092\u793a\u3059\u5fdc\u7b54\uff08\u30cd\u30ac\u30c6\u30a3\u30d6\u30a2\u30f3\u30b5\u30fc\uff09\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u305f\u308a\u3059\u308b\u3053\u3068\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ed\u30fc\u30ab\u30eb\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u3082\u30461\u3064\u306e\u5c64\u3092\u8ffd\u52a0\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3001\u30eb\u30fc\u30bf\u30fc\u3001\u30d6\u30e9\u30a6\u30b6\u3001\u307e\u305f\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304cDNS\u60c5\u5831\u3092\u4e00\u6642\u7684\u306b\u4fdd\u6301\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u30d6\u30e9\u30a6\u30b6\u3092\u518d\u8d77\u52d5\u3059\u308b\u304b\u3001\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306eDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30af\u30ea\u30a2\u3059\u308b\u3053\u3068\u3067\u72b6\u6cc1\u304c\u6539\u5584\u3055\u308c\u308b\u5834\u5408\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u518d\u5e30\u578b\u30ea\u30be\u30eb\u30d0\u304c\u307e\u3060\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3066\u3044\u308b\u5185\u5bb9\u306f\u5909\u66f4\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DNS\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u5909\u66f4\u306f\u3001\u8ffd\u52a0\u306e\u30bf\u30a4\u30df\u30f3\u30b0\u8981\u56e0\u3092\u3082\u305f\u3089\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30ec\u30b8\u30b9\u30c8\u30e9\u3067\u30c9\u30e1\u30a4\u30f3\u306e\u6a29\u5a01\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3092\u5909\u66f4\u3057\u305f\u5834\u5408\u3001\u30ea\u30be\u30eb\u30d0\u30fc\u306f\u59d4\u4efb\u60c5\u5831\u306e\u66f4\u65b0\u3060\u3051\u3067\u306a\u304f\u3001\u305d\u308c\u3089\u306e\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u304c\u63d0\u4f9b\u3059\u308b\u30ec\u30b3\u30fc\u30c9\u3082\u66f4\u65b0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u540c\u3058DNS\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30b5\u30fc\u30d3\u30b9\u5185\u3067A\u30ec\u30b3\u30fc\u30c9\u307e\u305f\u306fAAAA\u30ec\u30b3\u30fc\u30c9\u3092\u7de8\u96c6\u3059\u308b\u5834\u5408\u3068\u306f\u7570\u306a\u308b\u5909\u66f4\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u5f8c\u306b\u3001\u66f4\u65b0\u304c\u6a29\u5a01\u3042\u308b\u30bd\u30fc\u30b9\u3067\u6b63\u3057\u304f\u306a\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u8aa4\u3063\u305f\u30ec\u30b3\u30fc\u30c9\u304c\u7de8\u96c6\u3055\u308c\u305f\u5834\u5408\u3001\u5909\u66f4\u304c\u4fdd\u5b58\u3055\u308c\u306a\u304b\u3063\u305f\u5834\u5408\u3001\u30c9\u30e1\u30a4\u30f3\u304c\u7570\u306a\u308b\u6a29\u5a01\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u307e\u305f\u306f\u30ec\u30b3\u30fc\u30c9\u306b\u69cb\u6587\u30a8\u30e9\u30fc\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u5f85\u6a5f\u3057\u3066\u3082\u6839\u672c\u7684\u306a\u8a2d\u5b9a\u306f\u4fee\u6b63\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DNS\u4f1d\u64ad\u3068\u6a29\u5a01DNS\u66f4\u65b0<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6a29\u5a01DNS\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u307e\u305f\u306f\u30be\u30fc\u30f3\u306b\u5bfe\u3059\u308b\u516c\u5f0f\u30ec\u30b3\u30fc\u30c9\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002DNS\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d1\u30cd\u30eb\u3067\u30ec\u30b3\u30fc\u30c9\u3092\u7de8\u96c6\u3059\u308b\u3068\u3001\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u63d0\u4f9b\u3057\u3066\u3044\u308b\u6a29\u5a01\u30c7\u30fc\u30bf\u3092\u66f4\u65b0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u518d\u5e30\u89e3\u6c7a\u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30c7\u30d0\u30a4\u30b9\u306b\u5bfe\u3057\u3066DNS\u5fdc\u7b54\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u5909\u66f4\u524d\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u30c7\u30fc\u30bf\u3092\u4fdd\u6301\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u6a29\u5a01\u30b5\u30fc\u30d0\u30fc\u304c\u65b0\u3057\u3044\u30a2\u30c9\u30ec\u30b9\u3092\u8fd4\u3059\u4e00\u65b9\u3067\u3001\u518d\u5e30\u89e3\u6c7a\u30b5\u30fc\u30d0\u30fc\u306f\u53e4\u3044\u30a2\u30c9\u30ec\u30b9\u3092\u5f15\u304d\u7d9a\u304d\u8fd4\u3059\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u533a\u5225\u306f\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u969b\u306b\u6709\u7528\u3067\u3059\u3002\u307e\u305a\u3001\u6a29\u5a01\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u304c\u4f55\u3092\u8fd4\u3059\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u3082\u3057\u65e2\u306b\u671f\u5f85\u3055\u308c\u308b\u30ec\u30b3\u30fc\u30c9\u3092\u8fd4\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u5909\u66f4\u306f\u30bd\u30fc\u30b9\u5074\u3067\u516c\u958b\u3055\u308c\u3066\u304a\u308a\u3001\u6b8b\u308a\u306e\u5dee\u7570\u306f\u30ad\u30e3\u30c3\u30b7\u30e5\u307e\u305f\u306f\u30ea\u30be\u30eb\u30d0\u30fc\u306e\u52d5\u4f5c\u306b\u3088\u308b\u3082\u306e\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002\u6a29\u5a01\u30b5\u30fc\u30d0\u30fc\u304c\u307e\u3060\u53e4\u3044\u5024\u3084\u5024\u305d\u306e\u3082\u306e\u3092\u8fd4\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u306f\u3001DNS\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u8a2d\u5b9a\u3068\u30ec\u30b3\u30fc\u30c9\u81ea\u4f53\u3092\u8abf\u67fb\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e\u5909\u66f4\u306f\u3082\u3046\u4e00\u3064\u306e\u5c64\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002\u89aaDNS\u30be\u30fc\u30f3\u306f\u610f\u56f3\u3057\u305f\u6a29\u5a01\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3092\u6307\u3057\u793a\u3059\u5fc5\u8981\u304c\u3042\u308a\u3001\u305d\u308c\u3089\u306e\u30b5\u30fc\u30d0\u30fc\u304c\u6b63\u3057\u3044\u30be\u30fc\u30f3\u3092\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30c9\u30e1\u30a4\u30f3\u304c\u5225\u306e\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306b\u59d4\u4efb\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001DNS\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u4e0a\u306e\u6b63\u3057\u3044\u30ec\u30b3\u30fc\u30c9\u306f\u6709\u7528\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u822c\u7684\u306aDNS\u306e\u5909\u66f4\u3068\u305d\u306e\u5f71\u97ff<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5909\u66f4\u3059\u308b <strong>\u8a18\u9332<\/strong> changes the IPv4 address returned for a hostname. Changing an <strong>AAAA\u30ec\u30b3\u30fc\u30c9<\/strong> IPv6\u30a2\u30c9\u30ec\u30b9\u3092\u5909\u66f4\u3059\u308b\u3002\u4e21\u65b9\u304c\u5b58\u5728\u3059\u308b\u5834\u5408\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304a\u3088\u3073\u63a5\u7d9a\u52d5\u4f5c\u306b\u5fdc\u3058\u3066\u3069\u3061\u3089\u306e\u30a2\u30c9\u30ec\u30b9\u30d5\u30a1\u30df\u30ea\u3067\u3082\u4f7f\u7528\u3067\u304d\u308b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5909\u66f4\u3059\u308b <strong>CNAME\u30ec\u30b3\u30fc\u30c9<\/strong> \u30a8\u30a4\u30ea\u30a2\u30b9\u304c\u6307\u3059\u30db\u30b9\u30c8\u540d\u3092\u5909\u66f4\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30ea\u30be\u30eb\u30d0\u306f\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u540d\u524d\u3068\u305d\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u53c2\u7167\u3059\u308b\u5fc5\u8981\u304c\u751f\u3058\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002CNAME\u81ea\u4f53\u304c\u5909\u66f4\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3067\u3082\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u30ec\u30b3\u30fc\u30c9\u3078\u306e\u5909\u66f4\u304c\u6700\u7d42\u7d50\u679c\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5909\u66f4\u3059\u308b <strong>MX\u30ec\u30b3\u30fc\u30c9<\/strong> \u30c9\u30e1\u30a4\u30f3\u5b9b\u3066\u306e\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u3059\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u3059\u3002\u30e1\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0\u306f\u3053\u308c\u3089\u306e\u30ec\u30b3\u30fc\u30c9\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u3001\u30e1\u30fc\u30eb\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u5909\u66f4\u304c\u53cd\u6620\u3055\u308c\u308b\u307e\u3067\u6642\u9593\u304c\u304b\u304b\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u30e1\u30fc\u30eb\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u3092\u5909\u66f4\u3059\u308b\u969b\u306b\u306f\u3001\u7ba1\u7406\u8005\u306fMX\u30ec\u30b3\u30fc\u30c9\u304a\u3088\u3073SPF\u3001DKIM\u3001DMARC\u306a\u3069\u306e\u95a2\u9023\u3059\u308b\u30e1\u30fc\u30eb\u8a8d\u8a3c\u30ec\u30b3\u30fc\u30c9\u3092\u5225\u9014\u78ba\u8a8d\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5909\u66f4\u4e2d <strong>\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc<\/strong> DNS\u30d7\u30ed\u30d0\u30a4\u30c0\u304c\u30c9\u30e1\u30a4\u30f3\u306b\u5bfe\u3057\u3066\u6a29\u5a01\u3092\u6301\u3064\u3088\u3046\u306b\u5909\u66f4\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u306f\u3001\u30ec\u30b8\u30b9\u30c8\u30e9\u3067\u306e\u6b63\u3057\u3044\u59d4\u4efb\u3068\u65b0\u3057\u3044\u30d7\u30ed\u30d0\u30a4\u30c0\u3067\u306e\u6b63\u3057\u3044\u30be\u30fc\u30f3\u8a2d\u5b9a\u304c\u5fc5\u8981\u3067\u3059\u3002\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e\u79fb\u884c\u306f\u614e\u91cd\u306b\u8a08\u753b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u65b0\u3057\u3044\u30d7\u30ed\u30d0\u30a4\u30c0\u3067\u30ec\u30b3\u30fc\u30c9\u304c\u6b20\u3051\u3066\u3044\u308b\u5834\u5408\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3001\u30e1\u30fc\u30eb\u3001\u307e\u305f\u306f\u305d\u306e\u4ed6\u306e\u30b5\u30fc\u30d3\u30b9\u304c\u5229\u7528\u4e0d\u53ef\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DNS\u306e\u5909\u66f4\u304c\u53cd\u6620\u3055\u308c\u305f\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f7f\u7528\u3057\u3066\u3044\u308b\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304b\u3089\u30c9\u30e1\u30a4\u30f3\u3092\u30af\u30a8\u30ea\u3059\u308b\u3053\u3068\u304b\u3089\u59cb\u3081\u307e\u3059\u3002Windows\u3001macOS\u3001\u304a\u3088\u3073Linux\u3067\u306f\u3001 <code>nslookup<\/code> \u4e00\u822c\u7684\u306b\u5165\u624b\u53ef\u80fd\u3067\u3042\u308b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup example.com<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">IPv4\u30a2\u30c9\u30ec\u30b9\u30ec\u30b3\u30fc\u30c9\u3092\u78ba\u8a8d\u3059\u308b\u306b\u306f\u3001\u4ee5\u4e0b\u3092\u4f7f\u7528\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup -type=A example.com<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">IPv6\u306e\u5834\u5408\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup -type=AAAA example.com<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u30ec\u30b3\u30fc\u30c9\u306e\u5834\u5408\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup -type=MX example.com<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">macOS\u304a\u3088\u3073Linux\u3067\u306f\u3001 <code>\u30c7\u30a3\u30b0<\/code> \u3088\u308a\u8a73\u7d30\u306a\u51fa\u529b\u3092\u63d0\u4f9b\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dig example.com A<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u56de\u7b54\u30bb\u30af\u30b7\u30e7\u30f3\u306e\u307f\u3092\u8868\u793a\u3059\u308b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dig example.com A +noall +answer<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7279\u5b9a\u306e\u518d\u5e30DNS\u30b5\u30fc\u30d0\u30fc\u3092\u30af\u30a8\u30ea\u3057\u3066\u3001\u56de\u7b54\u3092\u6bd4\u8f03\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4f8b\u3048\u3070\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dig @1.1.1.1 example.com A<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">Windows\u3067\u306f\u3001DNS\u30b5\u30fc\u30d0\u30fc\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u6307\u5b9a\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>nslookup example.com 1.1.1.1<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7f6e\u304d\u63db\u3048\u308b <code>example.com<\/code> \u3042\u306a\u305f\u306e\u30c9\u30e1\u30a4\u30f3\u306b\u95a2\u9023\u3057\u3066\u3002\u3053\u308c\u3089\u306e\u4f8b\u306b\u304a\u3051\u308b\u30ea\u30be\u30eb\u30d0\u30a2\u30c9\u30ec\u30b9\u306f\u3001\u5358\u306b\u5229\u7528\u53ef\u80fd\u306a\u30d1\u30d6\u30ea\u30c3\u30af\u30ea\u30be\u30eb\u30d0\u306e\u4e00\u3064\u306b\u904e\u304e\u307e\u305b\u3093\u3002\u7d44\u7e54\u3084\u30d7\u30ed\u30d0\u30a4\u30c0\u304c\u4f7f\u7528\u3059\u308bDNS\u30b5\u30fc\u30d3\u30b9\u3082\u30af\u30a8\u30ea\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30af\u30a8\u30ea\u3057\u305f\u30ea\u30be\u30eb\u30d0\u30fc\u3001\u305d\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u3001\u304a\u3088\u3073\u6642\u9593\u3092\u8a18\u9332\u3057\u307e\u3059\u3002\u8907\u6570\u306e\u30ea\u30be\u30eb\u30d0\u30fc\u304b\u3089\u306e\u7d50\u679c\u3092\u6bd4\u8f03\u3059\u308b\u3053\u3068\u3067\u3001\u5dee\u7570\u304c\u7279\u5b9a\u306e\u30ea\u30be\u30eb\u30d0\u30fc\u306b\u9650\u5b9a\u3055\u308c\u3066\u3044\u308b\u306e\u304b\u3001\u3088\u308a\u5e83\u7bc4\u56f2\u3067\u767a\u751f\u3057\u3066\u3044\u308b\u306e\u304b\u3092\u5224\u65ad\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6a29\u5a01\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3092\u30af\u30a8\u30ea\u3059\u308b\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c9\u30e1\u30a4\u30f3\u306e\u6a29\u5a01\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3092\u898b\u3064\u3051\u308b\u306b\u306f\u3001\u4ee5\u4e0b\u3092\u4f7f\u7528\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dig example.com NS<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u306e\u5f8c\u3001\u5909\u66f4\u3057\u305f\u30ec\u30b3\u30fc\u30c9\u306b\u3064\u3044\u3066\u3001\u3053\u308c\u3089\u306e\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e1\u3064\u306b\u76f4\u63a5\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dig @ns1.example-dns.com example.com A<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u7f6e\u304d\u63db\u3048\u308b <code>ns1.example-dns.com<\/code> \u30c9\u30e1\u30a4\u30f3\u306b\u5bfe\u3057\u3066\u6a29\u5a01\u30b5\u30fc\u30d0\u30fc\u304c\u30ea\u30b9\u30c8\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3002\u76f4\u63a5\u30af\u30a8\u30ea\u3067\u671f\u5f85\u3055\u308c\u308b\u30a2\u30c9\u30ec\u30b9\u304c\u8fd4\u3055\u308c\u308b\u304c\u3001\u518d\u5e30\u578b\u30ea\u30be\u30eb\u30d0\u30fc\u304c\u53e4\u3044\u30a2\u30c9\u30ec\u30b9\u3092\u8fd4\u3059\u5834\u5408\u3001\u6a29\u5a01\u30c7\u30fc\u30bf\u306f\u66f4\u65b0\u3055\u308c\u3066\u304a\u308a\u3001\u30ea\u30be\u30eb\u30d0\u30fc\u306f\u307e\u3060\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f\u5fdc\u7b54\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ed6\u306b\u3082\u8cea\u554f\u3067\u304d\u307e\u3059 <code>\u30c7\u30a3\u30b0<\/code> \u59d4\u4efb\u30d7\u30ed\u30bb\u30b9\u3092\u8ffd\u8de1\u3059\u308b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>dig +trace example.com<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u306f\u3001\u30eb\u30fc\u30c8\u304b\u3089\u30c9\u30e1\u30a4\u30f3\u306e\u6a29\u5a01\u30b5\u30fc\u30d0\u30fc\u306b\u5411\u304b\u3063\u3066DNS\u968e\u5c64\u3092\u305f\u3069\u308b\u3082\u306e\u3067\u3059\u3002\u59d4\u4efb\u306e\u554f\u984c\u3092\u7279\u5b9a\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u304c\u3001\u305d\u306e\u51fa\u529b\u306f\u57fa\u672c\u7684\u306a\u30c1\u30a7\u30c3\u30af\u3067\u5fc5\u8981\u3068\u3055\u308c\u308b\u3082\u306e\u3088\u308a\u3082\u8a73\u7d30\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DNS\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u30d1\u30cd\u30eb\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u30c9\u30e1\u30a4\u30f3\u304c\u5b9f\u969b\u306b\u305d\u3053\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306b\u59d4\u4efb\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3042\u308b\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\u3067\u306f\u30ec\u30b3\u30fc\u30c9\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u3066\u3082\u3001\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u30c9\u30e1\u30a4\u30f3\u306f\u5225\u306e\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u3092\u6307\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3082\u3057\u4e00\u90e8\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u53e4\u3044\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3092\u898b\u305f\u3089\u3069\u3046\u306a\u308b\u3067\u3057\u3087\u3046\u304b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305a\u3001\u6a29\u5a01\u3042\u308bA\u307e\u305f\u306fAAAA\u30ec\u30b3\u30fc\u30c9\u304c\u610f\u56f3\u3057\u305f\u5024\u3092\u6301\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u6b21\u306b\u3001\u8907\u6570\u306e\u518d\u5e30\u578bDNS\u30b5\u30fc\u30d0\u30fc\u3092\u30af\u30a8\u30ea\u3057\u3001\u305d\u308c\u3089\u304c\u540c\u3058\u5fdc\u7b54\u3092\u8fd4\u3059\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u6a29\u5a01\u30c7\u30fc\u30bf\u304c\u6b63\u3057\u3044\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u4e00\u90e8\u306e\u30b5\u30fc\u30d0\u30fc\u304c\u53e4\u3044\u30a2\u30c9\u30ec\u30b9\u3092\u8fd4\u3059\u5834\u5408\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u539f\u56e0\u3067\u3042\u308b\u53ef\u80fd\u6027\u304c\u9ad8\u3044\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b21\u306b\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u30ed\u30fc\u30ab\u30eb\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002VPN\u3001\u4f01\u696d\u306eDNS\u30ea\u30be\u30eb\u30d0\u30fc\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u88fd\u54c1\u3001\u30d6\u30e9\u30a6\u30b6\u30ad\u30e3\u30c3\u30b7\u30e5\u3001\u307e\u305f\u306f\u30ed\u30fc\u30ab\u30eb\u306ehosts\u30d5\u30a1\u30a4\u30eb\u306f\u3001\u8fd4\u3055\u308c\u308b\u30a2\u30c9\u30ec\u30b9\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u30e2\u30d0\u30a4\u30eb\u63a5\u7d9a\u306a\u3069\u306e\u4ed6\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304b\u3089\u7d50\u679c\u3092\u6bd4\u8f03\u3057\u3001\u52d5\u4f5c\u304c\u5909\u5316\u3059\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u307e\u305f\u3001\u65e7\u30b5\u30fc\u30d0\u30fc\u3068\u65b0\u30b5\u30fc\u30d0\u30fc\u306e\u4e21\u65b9\u304c\u5fdc\u7b54\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3082\u8003\u616e\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u79fb\u884c\u304c\u4e0d\u6574\u5408\u306b\u898b\u3048\u308b\u5834\u5408\u3001\u53e4\u3044\u30db\u30b9\u30c8\u304c\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30b3\u30d4\u30fc\u3092\u63d0\u4f9b\u3057\u3066\u3044\u308b\u304b\u3001\u7570\u306a\u308b\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3092\u884c\u3063\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002DNS\u30ec\u30b3\u30fc\u30c9\u306f\u6b63\u3057\u3044\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u30ea\u30be\u30eb\u30d0\u30fc\u304c\u66f4\u65b0\u3057\u3066\u3044\u306a\u3044\u30e6\u30fc\u30b6\u30fc\u306b\u5bfe\u3057\u3066\u306f\u3001\u53e4\u3044\u30b5\u30fc\u30d0\u30fc\u304c\u5f15\u304d\u7d9a\u304d\u30a2\u30af\u30bb\u30b9\u53ef\u80fd\u3067\u3042\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u554f\u984c\u304cIPv4\u306e\u307f\u3001\u307e\u305f\u306fIPv6\u306e\u307f\u306b\u5f71\u97ff\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001A\u30ec\u30b3\u30fc\u30c9\u3068AAAA\u30ec\u30b3\u30fc\u30c9\u3092\u500b\u5225\u306b\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3042\u308b\u30c7\u30d0\u30a4\u30b9\u306fIPv6\u7d4c\u7531\u3067\u63a5\u7d9a\u3059\u308b\u4e00\u65b9\u3067\u3001\u5225\u306e\u30c7\u30d0\u30a4\u30b9\u306fIPv4\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u4e00\u65b9\u306e\u30a2\u30c9\u30ec\u30b9\u30d5\u30a1\u30df\u30ea\u30fc\u306f\u65b0\u3057\u3044\u30b5\u30fc\u30d0\u30fc\u3092\u6307\u3057\u3066\u3044\u308b\u304c\u3001\u3082\u3046\u4e00\u65b9\u306f\u307e\u3060\u53e4\u3044\u30b5\u30fc\u30d0\u30fc\u3092\u6307\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">DNS\u5909\u66f4\u5f8c\u306b\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u304c\u5229\u7528\u3067\u304d\u306a\u3044\u5834\u5408\u3001\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u3067\u3057\u3087\u3046\u304b\uff1f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c9\u30e1\u30a4\u30f3\u306e\u6a29\u5a01\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u304c\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3001\u5230\u9054\u53ef\u80fd\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u305d\u306e\u5f8c\u3001\u305d\u308c\u3089\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u95a2\u9023\u3059\u308b\u30ec\u30b3\u30fc\u30c9\u304c\u5b58\u5728\u3059\u308b\u304b\u691c\u8a3c\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u6700\u8fd1\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3092\u5909\u66f4\u3057\u305f\u5834\u5408\u306f\u3001\u65b0\u3057\u3044DNS\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306b\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3001\u30e1\u30fc\u30eb\u3001\u8a8d\u8a3c\u3001\u304a\u3088\u3073\u30b5\u30fc\u30d3\u30b9\u7528\u306e\u3059\u3079\u3066\u306e\u5fc5\u9808\u30ec\u30b3\u30fc\u30c9\u304c\u542b\u307e\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c9\u30e1\u30a4\u30f3\u3078\u306e\u63a5\u7d9a\u3092\u53d7\u3051\u5165\u308c\u308b\u305f\u3081\u306b\u3001\u5b9b\u5148\u30b5\u30fc\u30d0\u30fc\u306e\u6e96\u5099\u304c\u6574\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002DNS\u3092\u66f4\u65b0\u3059\u308b\u3060\u3051\u3067\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304c\u3069\u3053\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u304b\u3092\u5909\u66f4\u3059\u308b\u3060\u3051\u3067\u3042\u308a\u3001Web\u30b5\u30fc\u30d0\u30fc\u306e\u8a2d\u5b9a\u3001\u8a3c\u660e\u66f8\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u30dd\u30fc\u30c8\u958b\u653e\u3001\u307e\u305f\u306f\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u30d5\u30a1\u30a4\u30eb\u306e\u30b3\u30d4\u30fc\u306f\u884c\u308f\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DNS\u304c\u671f\u5f85\u3055\u308c\u308bIP\u30a2\u30c9\u30ec\u30b9\u3092\u8fd4\u3057\u3066\u3044\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u304c\u5931\u6557\u3059\u308b\u5834\u5408\u306f\u3001\u30b5\u30fc\u30d0\u30fc\u3068\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u500b\u5225\u306b\u30c6\u30b9\u30c8\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u554f\u984c\u306fWeb\u30b5\u30fc\u30d0\u30fc\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3001TLS\u8a3c\u660e\u66f8\u3001\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u8a2d\u5b9a\u3001\u307e\u305f\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u3042\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002DNS\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u306f\u540d\u524d\u89e3\u6c7a\u3092\u78ba\u8a8d\u3057\u307e\u3059\u304c\u3001\u30b5\u30fc\u30d3\u30b9\u304c\u6b63\u5e38\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30c7\u30d0\u30a4\u30b9\u3068\u76ee\u7684\u5730\u9593\u306e\u4e00\u822c\u7684\u306a\u30d1\u30b9\u30c1\u30a7\u30c3\u30af\u306b\u3064\u3044\u3066\u306f\u3001\u79c1\u305f\u3061\u306e\u30ac\u30a4\u30c9\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002 <a href=\"https:\/\/junglelabs.uk\/ja\/what-is-traceroute\/\">\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u63a5\u7d9a\u306e\u554f\u984c\u3092\u8a3a\u65ad\u3059\u308b\u305f\u3081\u306btraceroute\u3092\u4f7f\u7528\u3059\u308b<\/a>. Traceroute\u3068DNS\u306e\u53c2\u7167\u306f\u63a5\u7d9a\u306e\u7570\u306a\u308b\u90e8\u5206\u3092\u30c6\u30b9\u30c8\u3059\u308b\u305f\u3081\u3001\u554f\u984c\u3092\u7d5e\u308a\u8fbc\u3080\u969b\u306b\u306f\u3053\u308c\u3089\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u7528\u3059\u308b\u3068\u6709\u7528\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30cd\u30ac\u30c6\u30a3\u30d6\u30ad\u30e3\u30c3\u30b7\u30e5\u3068\u300c\u30ec\u30b3\u30fc\u30c9\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u300d\u306e\u7d50\u679c<\/h2>\n\n\n\n<p 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class=\"wp-block-paragraph\">\u7570\u306a\u308b\u5834\u6240\u304b\u3089\u7570\u306a\u308b\u518d\u5e30\u578bDNS\u30ea\u30be\u30eb\u30d0\u3092\u7167\u4f1a\u3059\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30ea\u30be\u30eb\u30d0\u306f\u3001\u7570\u306a\u308b\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f\u56de\u7b54\u3092\u6301\u3063\u3066\u3044\u308b\u5834\u5408\u3084\u3001\u7570\u306a\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u66f4\u65b0\u3055\u308c\u308b\u5834\u5408\u3001\u3042\u308b\u3044\u306f\u5730\u7406\u7684\u306aDNS\u30dd\u30ea\u30b7\u30fc\u306b\u3088\u308a\u7570\u306a\u308b\u56de\u7b54\u3092\u53d7\u3051\u53d6\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306eDNS\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u30d5\u30e9\u30c3\u30b7\u30e5\uff08\u30af\u30ea\u30a2\uff09\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u81ea\u5206\u306e\u30c7\u30d0\u30a4\u30b9\u304c\u53e4\u3044\u56de\u7b54\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u3001\u4f1a\u793e\u306e\u30ea\u30be\u30eb\u30d0\u30fc\u3001\u307e\u305f\u306f\u30d1\u30d6\u30ea\u30c3\u30afDNS\u30b5\u30fc\u30d3\u30b9\u306b\u3088\u3063\u3066\u4fdd\u6301\u3055\u308c\u3066\u3044\u308b\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u30af\u30ea\u30a2\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u306a\u305c\u79c1\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306f\u89e3\u6c7a\u3055\u308c\u308b\u304c\u3001\u307e\u3060\u8aad\u307f\u8fbc\u307f\u306b\u5931\u6557\u3059\u308b\u306e\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">DNS\u306f\u6b63\u3057\u3044\u30a2\u30c9\u30ec\u30b9\u3092\u8fd4\u3057\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u5b9b\u5148\u30b5\u30fc\u30d0\u30fc\u307e\u305f\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u554f\u984c\u304c\u3042\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002Web\u30b5\u30fc\u30d0\u30fc\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3001TLS\u8a3c\u660e\u66f8\u3001\u304a\u3088\u3073\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u69cb\u6210\u3092\u500b\u5225\u306b\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e\u5909\u66f4\u306f\u3001\u30ec\u30b3\u30fc\u30c9\u306e\u5909\u66f4\u3088\u308a\u3082\u6642\u9593\u304c\u304b\u304b\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u306b\u306f\u3001\u30ec\u30b8\u30b9\u30c8\u30e9\u304a\u3088\u3073\u89aaDNS\u30be\u30fc\u30f3\u306b\u304a\u3051\u308b\u8ffd\u52a0\u306e\u59d4\u4efb\u60c5\u5831\u304c\u542b\u307e\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u65b0\u3057\u3044\u30d7\u30ed\u30d0\u30a4\u30c0\u3082\u307e\u305f\u3001\u5b8c\u5168\u304b\u3064\u6b63\u78ba\u306a\u30be\u30fc\u30f3\u3092\u63d0\u4f9b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u65b0\u3057\u3044\u6a29\u5a01\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306b\u304a\u3051\u308b\u59d4\u4efb\u3068\u30ec\u30b3\u30fc\u30c9\u306e\u4e21\u65b9\u3092\u691c\u8a3c\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">DNS\u306e\u5909\u66f4\u306f\u3001\u6a29\u5a01\u30cd\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u3068\u518d\u5e30\u578b\u30ea\u30be\u30eb\u30d0\u30fc\u304c\u7570\u306a\u308b\u5f79\u5272\u3092\u62c5\u3063\u3066\u304a\u308a\u3001\u30ea\u30be\u30eb\u30d0\u30fc\u304cTTL\u5024\u306b\u57fa\u3065\u3044\u3066\u56de\u7b54\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3059\u308b\u305f\u3081\u3001\u7570\u306a\u308b\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u53cd\u6620\u3055\u308c\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u3042\u308b\u30e6\u30fc\u30b6\u30fc\u306f\u53e4\u3044\u30a2\u30c9\u30ec\u30b9\u3092\u8868\u793a\u3057\u3066\u3044\u308b\u4e00\u65b9\u3067\u3001\u5225\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u3059\u3067\u306b\u65b0\u3057\u3044\u30a2\u30c9\u30ec\u30b9\u3092\u53d7\u3051\u53d6\u3063\u3066\u3044\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p 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class=\"wp-block-paragraph\">\u30ad\u30e3\u30c3\u30b7\u30f3\u30b0\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001DNS\u306e\u5909\u66f4\u3092\u3088\u308a\u5bb9\u6613\u306b\u8a08\u753b\u3057\u3001\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3055\u3089\u306b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u57fa\u790e\u77e5\u8b58\u3092\u6df1\u3081\u308b\u305f\u3081\u306b\u3001\u4ee5\u4e0b\u306e\u30ac\u30a4\u30c9\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002 <a href=\"https:\/\/junglelabs.uk\/ja\/what-is-an-ip-address-a-complete-beginners-guide\/\">IP\u30a2\u30c9\u30ec\u30b9<\/a>, <a href=\"https:\/\/junglelabs.uk\/ja\/what-is-a-default-gateway\/\">\u30c7\u30d5\u30a9\u30eb\u30c8\u30b2\u30fc\u30c8\u30a6\u30a7\u30a4<\/a>\u3001 <a href=\"https:\/\/junglelabs.uk\/ja\/what-is-traceroute\/\">\u30c8\u30ec\u30fc\u30b9\u30eb\u30fc\u30c8<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>You update a domain\u2019s DNS records, save the change, and expect the new website or mail service to work immediately. But a colleague still sees the old website, an online checker shows a different address, or email delivery behaves inconsistently. This delay is commonly called DNS propagation. The phrase can make it sound as though a single update is travelling through a central Internet system. DNS is distributed, however. Domain information is stored and cached across authoritative name servers, recursive resolvers, routers, operating systems, and applications. Each system may refresh its information at a different time. Most DNS changes become visible as caches expire and resolvers retrieve fresh records. How [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2344,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"What Is DNS Propagation? Why DNS Changes Take Time","_seopress_titles_desc":"Learn why DNS changes take time to appear, how caching and TTL affect updates, and how to check whether a domain is returning the expected records.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-2342","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-article"],"_links":{"self":[{"href":"https:\/\/junglelabs.uk\/ja\/wp-json\/wp\/v2\/posts\/2342","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/junglelabs.uk\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/junglelabs.uk\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/junglelabs.uk\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/junglelabs.uk\/ja\/wp-json\/wp\/v2\/comments?post=2342"}],"version-history":[{"count":1,"href":"https:\/\/junglelabs.uk\/ja\/wp-json\/wp\/v2\/posts\/2342\/revisions"}],"predecessor-version":[{"id":2343,"href":"https:\/\/junglelabs.uk\/ja\/wp-json\/wp\/v2\/posts\/2342\/revisions\/2343"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/junglelabs.uk\/ja\/wp-json\/wp\/v2\/media\/2344"}],"wp:attachment":[{"href":"https:\/\/junglelabs.uk\/ja\/wp-json\/wp\/v2\/media?parent=2342"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/junglelabs.uk\/ja\/wp-json\/wp\/v2\/categories?post=2342"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/junglelabs.uk\/ja\/wp-json\/wp\/v2\/tags?post=2342"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}