{"id":479448,"date":"2023-08-09T10:40:25","date_gmt":"2023-08-09T10:40:25","guid":{"rendered":""},"modified":"2023-09-05T11:18:50","modified_gmt":"2023-09-05T11:18:50","slug":"unknown-host","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/unknown-host\/","title":{"rendered":"\u672a\u77e5\u306e\u30db\u30b9\u30c8"},"content":{"rendered":"<h2>\u672a\u77e5\u306e\u30db\u30b9\u30c8\u306e\u7d39\u4ecb<\/h2>\n<p>\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u3068\u306f\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3084\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3067\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u7528\u8a9e\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u30b7\u30b9\u30c6\u30e0 (\u901a\u5e38\u306f Web \u30d6\u30e9\u30a6\u30b6\u30fc) \u304c\u7279\u5b9a\u306e\u30c9\u30e1\u30a4\u30f3\u540d\u306e IP \u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3067\u304d\u306a\u3044\u72b6\u6cc1\u3092\u6307\u3057\u307e\u3059\u3002Web \u30b5\u30a4\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3059\u308b\u3068\u3001\u30d6\u30e9\u30a6\u30b6\u30fc\u306f DNS (\u30c9\u30e1\u30a4\u30f3 \u30cd\u30fc\u30e0 \u30b7\u30b9\u30c6\u30e0) \u30b5\u30fc\u30d0\u30fc\u306b\u30af\u30a8\u30ea\u3092\u5b9f\u884c\u3057\u3066\u3001\u30c9\u30e1\u30a4\u30f3\u540d\u306b\u95a2\u9023\u4ed8\u3051\u3089\u308c\u305f IP \u30a2\u30c9\u30ec\u30b9\u3092\u898b\u3064\u3051\u307e\u3059\u3002DNS \u30b5\u30fc\u30d0\u30fc\u304c\u8981\u6c42\u3055\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u306e IP \u30a2\u30c9\u30ec\u30b9\u3092\u898b\u3064\u3051\u3089\u308c\u306a\u3044\u5834\u5408\u3001\u30c9\u30e1\u30a4\u30f3\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u8a8d\u8b58\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u793a\u3059\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u30a8\u30e9\u30fc 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\u306f\u3053\u306e\u30cb\u30fc\u30ba\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306b\u8a2d\u8a08\u3055\u308c\u3001\u305d\u308c\u4ee5\u6765\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u52d5\u4f5c\u306e\u57fa\u672c\u7684\u306a\u5074\u9762\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u3068\u3044\u3046\u7528\u8a9e\u304c\u521d\u3081\u3066\u767b\u5834\u3057\u305f\u306e\u306f\u30011980 \u5e74\u4ee3\u5f8c\u534a\u304b\u3089 1990 \u5e74\u4ee3\u524d\u534a\u306e\u521d\u671f\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 \u30d5\u30a9\u30fc\u30e9\u30e0\u3084\u6280\u8853\u30c7\u30a3\u30b9\u30ab\u30c3\u30b7\u30e7\u30f3\u3067\u3059\u3002\u3053\u306e\u30a8\u30e9\u30fc\u306b\u906d\u9047\u3057\u305f\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u554f\u984c\u3092\u89e3\u6c7a\u3057\u3066\u76ee\u7684\u306e Web \u30b5\u30a4\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3057\u7d9a\u3051\u308b\u305f\u3081\u306e\u89e3\u6c7a\u7b56\u3092\u63a2\u3057\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n<h2>\u4e0d\u660e\u30db\u30b9\u30c8\u306b\u95a2\u3059\u308b\u8a73\u7d30\u60c5\u5831<\/h2>\n<p>\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 \u30e6\u30fc\u30b6\u30fc\u304c Web \u30b5\u30a4\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3088\u3046\u3068\u3057\u305f\u3068\u304d\u306b\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u30c9\u30e1\u30a4\u30f3\u540d\u3092 IP \u30a2\u30c9\u30ec\u30b9\u306b\u89e3\u6c7a\u3067\u304d\u306a\u3044\u3068\u304d\u306b\u767a\u751f\u3059\u308b\u30a8\u30e9\u30fc\u3067\u3059\u3002\u3053\u306e\u30a8\u30e9\u30fc \u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u901a\u5e38\u3001Google Chrome\u3001Mozilla Firefox\u3001Microsoft Edge \u306a\u3069\u306e\u4e00\u822c\u7684\u306a Web \u30d6\u30e9\u30a6\u30b6\u30fc\u3067\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u307e\u305f\u306f\u300c\u30db\u30b9\u30c8\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u300d\u3068\u3057\u3066\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30a8\u30e9\u30fc\u306f\u3055\u307e\u3056\u307e\u306a\u7406\u7531\u3067\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u304c\u3001\u305d\u306e\u4e00\u90e8\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>URL \u306e\u8aa4\u5b57<\/li>\n<li>DNS \u30b5\u30fc\u30d0\u30fc\u306e\u554f\u984c<\/li>\n<li>\u30c9\u30e1\u30a4\u30f3\u540d\u306e\u6709\u52b9\u671f\u9650\u5207\u308c\u307e\u305f\u306f\u8a2d\u5b9a\u30df\u30b9<\/li>\n<li>\u63a5\u7d9a\u306e\u554f\u984c<\/li>\n<li>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u5236\u9650<\/li>\n<\/ul>\n<h2>\u672a\u77e5\u306e\u30db\u30b9\u30c8\u306e\u5185\u90e8\u69cb\u9020\uff1a\u305d\u306e\u4ed5\u7d44\u307f<\/h2>\n<p>\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u30a8\u30e9\u30fc\u306e\u4ed5\u7d44\u307f\u3092\u7406\u89e3\u3059\u308b\u306b\u306f\u3001\u30c9\u30e1\u30a4\u30f3 \u30cd\u30fc\u30e0 \u30b7\u30b9\u30c6\u30e0 (DNS) \u306e\u6a5f\u80fd\u3092\u628a\u63e1\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002DNS \u306f\u3001\u4eba\u9593\u304c\u5224\u8aad\u3067\u304d\u308b\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u6a5f\u68b0\u304c\u5224\u8aad\u3067\u304d\u308b IP \u30a2\u30c9\u30ec\u30b9\u306b\u5909\u63db\u3059\u308b\u5206\u6563\u30b7\u30b9\u30c6\u30e0\u3067\u3059\u3002DNS \u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u8907\u6570\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li>DNS \u30ea\u30be\u30eb\u30d0: DNS \u30af\u30a8\u30ea\u3092\u958b\u59cb\u3057\u3001DNS \u30b5\u30fc\u30d0\u30fc\u3068\u901a\u4fe1\u3057\u3066\u30c9\u30e1\u30a4\u30f3\u540d\u3092\u89e3\u6c7a\u3059\u308b\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u5074\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3059\u3002<\/li>\n<li>DNS \u30b5\u30fc\u30d0\u30fc: \u7279\u5b9a\u306e\u30c9\u30e1\u30a4\u30f3\u306e DNS \u30ec\u30b3\u30fc\u30c9\u3092\u4fdd\u5b58\u304a\u3088\u3073\u63d0\u4f9b\u3059\u308b\u6a29\u9650\u3092\u6301\u3064\u30b5\u30fc\u30d0\u30fc\u3067\u3059\u3002<\/li>\n<\/ul>\n<p>\u30e6\u30fc\u30b6\u30fc\u304c Web \u30d6\u30e9\u30a6\u30b6\u306b URL \u3092\u5165\u529b\u3059\u308b\u3068\u3001\u30b7\u30b9\u30c6\u30e0\u5185\u306e DNS \u30ea\u30be\u30eb\u30d0\u304c DNS \u30b5\u30fc\u30d0\u30fc\u306b\u30af\u30a8\u30ea\u3092\u9001\u4fe1\u3057\u3001\u30c9\u30e1\u30a4\u30f3\u306b\u95a2\u9023\u4ed8\u3051\u3089\u308c\u305f IP \u30a2\u30c9\u30ec\u30b9\u3092\u53d6\u5f97\u3057\u307e\u3059\u3002DNS \u30b5\u30fc\u30d0\u30fc\u304c\u4e00\u81f4\u3059\u308b IP \u30a2\u30c9\u30ec\u30b9\u3092\u898b\u3064\u3051\u3089\u308c\u306a\u3044\u5834\u5408\u3001\u30c9\u30e1\u30a4\u30f3\u540d\u304c\u767b\u9332\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u89e3\u6c7a\u3067\u304d\u306a\u3044\u3053\u3068\u3092\u793a\u3059\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u30a8\u30e9\u30fc\u304c\u8fd4\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2>\u672a\u77e5\u306e\u30db\u30b9\u30c8\u306e\u4e3b\u306a\u7279\u5fb4\u306e\u5206\u6790<\/h2>\n<p>\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u30a8\u30e9\u30fc\u306e\u4e3b\u306a\u7279\u5fb4\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ol>\n<li><strong>\u30a8\u30e9\u30fc\u306e\u7279\u5b9a<\/strong>: \u3053\u306e\u30a8\u30e9\u30fc\u306b\u3088\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u3068\u7ba1\u7406\u8005\u306f\u30c9\u30e1\u30a4\u30f3\u540d\u89e3\u6c7a\u306b\u95a2\u3059\u308b\u6f5c\u5728\u7684\u306a\u554f\u984c\u3092\u3059\u3050\u306b\u7279\u5b9a\u3067\u304d\u307e\u3059\u3002<\/li>\n<li><strong>\u8a3a\u65ad\u60c5\u5831<\/strong>: \u30a8\u30e9\u30fc 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\u30b5\u30fc\u30d0\u30fc\u81ea\u4f53\u306b\u554f\u984c\u304c\u3042\u308b\u5834\u5408\u306f\u3001DNS \u30af\u30a8\u30ea\u306b\u5fdc\u7b54\u3067\u304d\u305a\u3001\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u30c9\u30e1\u30a4\u30f3\u306e\u8aa4\u3063\u305f\u69cb\u6210<\/td>\n<td>\u30c9\u30e1\u30a4\u30f3\u306e DNS \u30ec\u30b3\u30fc\u30c9\u304c\u6b63\u3057\u304f\u69cb\u6210\u3055\u308c\u3066\u3044\u306a\u3044\u3068\u3001\u9069\u5207\u306a\u89e3\u6c7a\u304c\u59a8\u3052\u3089\u308c\u3001\u30a8\u30e9\u30fc \u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u63a5\u7d9a\u306e\u554f\u984c<\/td>\n<td>\u30e6\u30fc\u30b6\u30fc\u306e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u63a5\u7d9a\u307e\u305f\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u554f\u984c\u306b\u3088\u308a\u3001DNS \u30b5\u30fc\u30d0\u30fc\u3068\u306e\u901a\u4fe1\u304c\u59a8\u3052\u3089\u308c\u3001\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u5236\u9650<\/td>\n<td>\u5834\u5408\u306b\u3088\u3063\u3066\u306f\u3001\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u3084\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8a2d\u5b9a\u306b\u3088\u3063\u3066 DNS \u8981\u6c42\u304c\u30d6\u30ed\u30c3\u30af\u3055\u308c\u3001\u30c9\u30e1\u30a4\u30f3\u540d\u306e\u89e3\u6c7a\u304c\u59a8\u3052\u3089\u308c\u3001\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4e0d\u660e\u30db\u30b9\u30c8\u306e\u4f7f\u7528\u65b9\u6cd5\u3001\u554f\u984c\u3001\u304a\u3088\u3073\u305d\u306e\u89e3\u6c7a\u7b56<\/h2>\n<h3>\u4e0d\u660e\u30db\u30b9\u30c8\u306e\u4f7f\u7528<\/h3>\n<p>\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u306f\u30a8\u30e9\u30fc\u3067\u3042\u308a\u3001\u30c4\u30fc\u30eb\u3084\u30b5\u30fc\u30d3\u30b9\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u30e6\u30fc\u30b6\u30fc\u3068\u7ba1\u7406\u8005\u306b\u6f5c\u5728\u7684\u306a DNS \u95a2\u9023\u306e\u554f\u984c\u3092\u901a\u77e5\u3059\u308b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u3053\u306e\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3068\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u30c9\u30e1\u30a4\u30f3\u89e3\u6c7a\u306e\u554f\u984c\u3092\u7279\u5b9a\u3057\u3001\u9069\u5207\u306a\u624b\u9806\u3067\u89e3\u6c7a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3>\u554f\u984c\u3068\u89e3\u6c7a\u7b56<\/h3>\n<ol>\n<li><strong>\u8aa4\u690d<\/strong>: URL \u306b\u30b9\u30da\u30eb\u3084\u69cb\u6587\u306e\u9593\u9055\u3044\u304c\u306a\u3044\u304b\u518d\u5ea6\u78ba\u8a8d\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30bf\u30a4\u30d7\u30df\u30b9\u3092\u4fee\u6b63\u3059\u308b\u3068\u554f\u984c\u306f\u89e3\u6c7a\u3059\u308b\u306f\u305a\u3067\u3059\u3002<\/li>\n<li><strong>DNS \u30b5\u30fc\u30d0\u30fc\u306e\u554f\u984c<\/strong>: DNS \u30b5\u30fc\u30d0\u30fc\u304c\u52d5\u4f5c\u3057\u3066\u304a\u308a\u3001\u9069\u5207\u306b\u69cb\u6210\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u30d1\u30d6\u30ea\u30c3\u30af DNS \u30b5\u30fc\u30d0\u30fc\u306e\u5834\u5408\u306f\u3001\u4e00\u6642\u7684\u306b\u5225\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u5207\u308a\u66ff\u3048\u308b\u3053\u3068\u3092\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li><strong>\u30c9\u30e1\u30a4\u30f3\u306e\u8aa4\u3063\u305f\u69cb\u6210<\/strong>: \u30c9\u30e1\u30a4\u30f3\u306e DNS \u30ec\u30b3\u30fc\u30c9\u3092\u78ba\u8a8d\u3057\u3001\u6b63\u78ba\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001\u30c9\u30e1\u30a4\u30f3 \u30ec\u30b8\u30b9\u30c8\u30e9\u307e\u305f\u306f\u30db\u30b9\u30c6\u30a3\u30f3\u30b0 \u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306b\u554f\u3044\u5408\u308f\u305b\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n<li><strong>\u63a5\u7d9a\u306e\u554f\u984c<\/strong>: \u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u63a5\u7d9a\u3068\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8a2d\u5b9a\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u884c\u3044\u3001DNS \u30b5\u30fc\u30d0\u30fc\u3068\u306e\u9069\u5207\u306a\u901a\u4fe1\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u5236\u9650<\/strong>: \u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3057\u3001DNS \u8981\u6c42\u304c\u30d6\u30ed\u30c3\u30af\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u30d5\u30a1\u30a4\u30a2\u30a6\u30a9\u30fc\u30eb \u30eb\u30fc\u30eb\u3092\u8abf\u6574\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<h2>\u4e3b\u306a\u7279\u5fb4\u3068\u985e\u4f3c\u7528\u8a9e\u3068\u306e\u6bd4\u8f03<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u5b66\u671f<\/th>\n<th>\u8aac\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u672a\u77e5\u306e\u30db\u30b9\u30c8<\/td>\n<td>DNS \u30b5\u30fc\u30d0\u30fc\u304c\u30c9\u30e1\u30a4\u30f3\u540d\u306e IP \u30a2\u30c9\u30ec\u30b9\u3092\u89e3\u6c7a\u3067\u304d\u305a\u3001\u76ee\u7684\u306e Web \u30b5\u30a4\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u306a\u3044\u3053\u3068\u3092\u793a\u3059\u30a8\u30e9\u30fc\u3002<\/td>\n<\/tr>\n<tr>\n<td>DNS\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u5931\u6557<\/td>\n<td>\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u30a8\u30e9\u30fc\u306e\u5225\u540d\u3002DNS \u30eb\u30c3\u30af\u30a2\u30c3\u30d7 \u30d7\u30ed\u30bb\u30b9\u306e\u5931\u6557\u3092\u5f37\u8abf\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>404\u304a\u63a2\u3057\u306e\u30da\u30fc\u30b8\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f<\/td>\n<td>Web \u30da\u30fc\u30b8\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u969b\u306b\u5225\u306e\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3057\u305f\u3002\u30b5\u30fc\u30d0\u30fc\u304c\u8981\u6c42\u3055\u308c\u305f\u30da\u30fc\u30b8\u3092\u898b\u3064\u3051\u3089\u308c\u306a\u304b\u3063\u305f\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u63a5\u7d9a\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8<\/td>\n<td>\u63a5\u7d9a\u3092\u78ba\u7acb\u3057\u3088\u3046\u3068\u3059\u308b\u969b\u306b\u3001\u30b5\u30fc\u30d0\u30fc\u304c\u6307\u5b9a\u3055\u308c\u305f\u6642\u9593\u5185\u306b\u5fdc\u7b54\u3057\u306a\u3044\u5834\u5408\u306b\u767a\u751f\u3059\u308b\u30a8\u30e9\u30fc\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u672a\u77e5\u306e\u5bbf\u4e3b\u306b\u95a2\u3059\u308b\u5c06\u6765\u306e\u5c55\u671b\u3068\u6280\u8853<\/h2>\n<p>\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u304c\u9032\u5316\u3057\u7d9a\u3051\u308b\u306b\u3064\u308c\u3066\u3001DNS \u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u306e\u9032\u6b69\u3001DNS \u30b5\u30fc\u30d0\u30fc\u306e\u4fe1\u983c\u6027\u306e\u5411\u4e0a\u3001Web \u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u30a8\u30e9\u30fc\u51e6\u7406\u30e1\u30ab\u30cb\u30ba\u30e0\u306e\u6539\u5584\u306b\u3088\u308a\u3001\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u30a8\u30e9\u30fc\u306e\u767a\u751f\u306f\u6e1b\u5c11\u3059\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001IPv6 \u306e\u666e\u53ca\u306b\u3088\u308a\u3001DNS \u89e3\u6c7a\u306e\u5b9f\u884c\u65b9\u6cd5\u304c\u5909\u66f4\u3055\u308c\u3001\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u53ef\u80fd\u6027\u304c\u5f71\u97ff\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u306e\u4f7f\u7528\u65b9\u6cd5\u3084\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u3068\u306e\u95a2\u9023\u4ed8\u3051\u65b9\u6cd5<\/h2>\n<p>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068 DNS \u30b5\u30fc\u30d0\u30fc\u9593\u306e\u4ef2\u4ecb\u5f79\u3068\u3057\u3066\u52d5\u4f5c\u3059\u308b\u3053\u3068\u3067\u3001\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u30a8\u30e9\u30fc\u306b\u5bfe\u51e6\u3059\u308b\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u30e6\u30fc\u30b6\u30fc\u304c\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u7d4c\u7531\u3067 Web \u30b5\u30a4\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3001DNS \u89e3\u6c7a\u306f\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u306a\u304f\u30d7\u30ed\u30ad\u30b7\u306b\u3088\u3063\u3066\u5b9f\u884c\u3055\u308c\u307e\u3059\u3002\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u304c\u30c9\u30e1\u30a4\u30f3\u3092\u6b63\u5e38\u306b\u89e3\u6c7a\u3067\u304d\u308b\u5834\u5408\u3001Web \u30b5\u30fc\u30d0\u30fc\u304b\u3089\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u53d6\u5f97\u3057\u3066\u30e6\u30fc\u30b6\u30fc\u306b\u8ee2\u9001\u3057\u307e\u3059\u3002<\/p>\n<p>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u7279\u306b DNS \u30b5\u30fc\u30d0\u30fc\u304c\u4e00\u6642\u7684\u306b\u5229\u7528\u3067\u304d\u306a\u304f\u306a\u3063\u305f\u308a\u30d6\u30ed\u30c3\u30af\u3055\u308c\u305f\u308a\u3057\u3066\u3044\u308b\u72b6\u6cc1\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u30b7\u30b9\u30c6\u30e0\u4e0a\u306e DNS \u95a2\u9023\u306e\u554f\u984c\u3092\u56de\u907f\u3059\u308b\u306e\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u305f\u3060\u3057\u3001DNS \u69cb\u6210\u306b\u6b20\u9665\u304c\u3042\u3063\u305f\u308a\u3001\u8981\u6c42\u3055\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u304c\u30d7\u30ed\u30ad\u30b7 \u30ec\u30d9\u30eb\u3067\u30d6\u30ed\u30c3\u30af\u3055\u308c\u3066\u3044\u305f\u308a\u3059\u308b\u3068\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u81ea\u4f53\u3067\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308b\u306e\u3067\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<h2>\u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n<p>\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u30a8\u30e9\u30fc\u3001DNS\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<ol>\n<li><a href=\"https:\/\/www.cloudflare.com\/learning\/dns\/what-is-dns\/\" target=\"_new\" rel=\"noopener nofollow\">DNS \u306e\u8aac\u660e: \u30c9\u30e1\u30a4\u30f3 \u30cd\u30fc\u30e0 \u30b7\u30b9\u30c6\u30e0\u306e\u4ed5\u7d44\u307f<\/a><\/li>\n<li><a href=\"https:\/\/www.cloudflare.com\/learning\/cdn\/glossary\/reverse-proxy\/\" target=\"_new\" rel=\"noopener nofollow\">\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc: \u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3068\u306f\u4f55\u304b\u3001\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u304b<\/a><\/li>\n<li><a href=\"https:\/\/www.cloudflare.com\/learning\/dns\/dns-troubleshooting-common-issues\/\" target=\"_new\" rel=\"noopener nofollow\">\u4e00\u822c\u7684\u306a DNS \u306e\u554f\u984c\u306e\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/a><\/li>\n<\/ol>\n<p>\u7d50\u8ad6\u3068\u3057\u3066\u3001\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u306f\u3001DNS \u89e3\u6c7a\u304c\u5931\u6557\u3057\u305f\u3068\u304d\u306b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3067\u3088\u304f\u767a\u751f\u3059\u308b\u30a8\u30e9\u30fc\u3067\u3059\u3002\u305d\u306e\u539f\u56e0\u3068\u53ef\u80fd\u306a\u89e3\u6c7a\u7b56\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u3068\u7ba1\u7406\u8005\u306f\u3053\u308c\u3089\u306e\u554f\u984c\u306b\u52b9\u679c\u7684\u306b\u5bfe\u51e6\u3057\u3001\u3088\u308a\u30b9\u30e0\u30fc\u30ba\u306a\u30d6\u30e9\u30a6\u30b8\u30f3\u30b0\u4f53\u9a13\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u6280\u8853\u304c\u9032\u6b69\u3059\u308b\u306b\u3064\u308c\u3066\u3001\u300c\u4e0d\u660e\u306a\u30db\u30b9\u30c8\u300d\u30a8\u30e9\u30fc\u306e\u767a\u751f\u306f\u6e1b\u5c11\u3059\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001DNS \u95a2\u9023\u306e\u554f\u984c\u3092\u7279\u5b9a\u3059\u308b\u4e0a\u3067\u306e\u91cd\u8981\u6027\u306f\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 \u30a4\u30f3\u30d5\u30e9\u30b9\u30c8\u30e9\u30af\u30c1\u30e3\u3092\u7dad\u6301\u3059\u308b\u4e0a\u3067\u4f9d\u7136\u3068\u3057\u3066\u91cd\u8981\u3067\u3059\u3002<\/p>","protected":false},"featured_media":479449,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-479448","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Unknown Host: A Comprehensive Overview<\/mark>","faq_items":[{"question":"What is \"Unknown Host\"?","answer":"<p><strong>Answer<\/strong>: \"Unknown Host\" is an error message encountered during internet browsing when a system, such as a web browser, fails to resolve the IP address of a specific domain name. This error occurs when the Domain Name System (DNS) server cannot find a matching IP address for the requested domain.<\/p>"},{"question":"Why do I see the \"Unknown Host\" error?","answer":"<p><strong>Answer<\/strong>: There are several reasons for encountering the \"Unknown Host\" error. It can be due to typographical errors in the URL, DNS server issues, domain name misconfiguration, connectivity problems, or firewall restrictions.<\/p>"},{"question":"How does the Domain Name System (DNS) work?","answer":"<p><strong>Answer<\/strong>: The DNS is a distributed system that translates human-readable domain names into machine-readable IP addresses. When you enter a URL in your web browser, the DNS resolver sends a query to a DNS server to obtain the IP address associated with the domain. If the DNS server cannot find the IP address, it responds with the \"Unknown Host\" error.<\/p>"},{"question":"What are the main types of \"Unknown Host\" errors?","answer":"<p><strong>Answer<\/strong>: The main types of \"Unknown Host\" errors include:<\/p><ol><li>Typographical Errors: Mistakes in spelling or syntax in the URL.<\/li><li>DNS Server Issues: Problems with the DNS server itself.<\/li><li>Domain Misconfiguration: Incorrectly configured DNS records for the domain.<\/li><li>Connectivity Problems: Issues with the internet connection or network.<\/li><li>Firewall Restrictions: Blocking of DNS requests by firewalls or security settings.<\/li><\/ol>"},{"question":"How can I resolve the \"Unknown Host\" error?","answer":"<p><strong>Answer<\/strong>: The solutions to the \"Unknown Host\" error depend on the specific cause. Here are some general troubleshooting steps:<\/p><ol><li>Double-check the URL for any typos.<\/li><li>Verify that the DNS server is operational and correctly configured.<\/li><li>Review the DNS records for the domain and ensure they are accurate.<\/li><li>Troubleshoot the internet connection and network settings.<\/li><li>Check the firewall settings and make sure DNS requests are not blocked.<\/li><\/ol>"},{"question":"How can proxy servers be associated with \"Unknown Host\"?","answer":"<p><strong>Answer<\/strong>: Proxy servers can help address \"Unknown Host\" errors by acting as intermediaries between the client and the DNS server. When you access a website through a proxy server, the DNS resolution is performed by the proxy. If the proxy successfully resolves the domain, it retrieves the content from the web server and forwards it to you, bypassing potential DNS-related issues on your system.<\/p>"},{"question":"What are the future perspectives related to \"Unknown Host\"?","answer":"<p><strong>Answer<\/strong>: As technology evolves, advancements in DNS infrastructure and improved error handling mechanisms in web browsers may reduce the occurrence of \"Unknown Host\" errors. Additionally, the widespread adoption of IPv6 may bring changes in how DNS resolution is performed, impacting the likelihood of encountering such errors.<\/p>"},{"question":"Where can I find more information about \"Unknown Host\" and related topics?","answer":"<p><strong>Answer<\/strong>: For more information about \"Unknown Host\" errors, DNS, and proxy servers, you can explore the following resources:<\/p><ol><li><a href=\"https:\/\/www.cloudflare.com\/learning\/dns\/what-is-dns\/\" target=\"_new\">DNS Explained: How the Domain Name System Works<\/a><\/li><li><a href=\"https:\/\/www.cloudflare.com\/learning\/cdn\/glossary\/reverse-proxy\/\" target=\"_new\">Proxy Servers: What They Are and How They Work<\/a><\/li><li><a href=\"https:\/\/www.cloudflare.com\/learning\/dns\/dns-troubleshooting-common-issues\/\" target=\"_new\">Troubleshooting Common DNS Issues<\/a><\/li><\/ol>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/479448","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/479448\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/479449"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=479448"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}