{"id":476241,"date":"2023-08-09T07:26:52","date_gmt":"2023-08-09T07:26:52","guid":{"rendered":""},"modified":"2023-09-05T11:12:18","modified_gmt":"2023-09-05T11:12:18","slug":"class-c-ip-address","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/class-c-ip-address\/","title":{"rendered":"\u30af\u30e9\u30b9C IP\u30a2\u30c9\u30ec\u30b9"},"content":{"rendered":"<p>\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306f\u3001\u30ed\u30fc\u30ab\u30eb \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304a\u3088\u3073\u30db\u30b9\u30c8\u306e\u30a2\u30c9\u30ec\u30b9\u6307\u5b9a\u7528\u306b Internet Assigned Numbers Authority (IANA) \u306b\u3088\u3063\u3066\u6307\u5b9a\u3055\u308c\u305f IP \u30a2\u30c9\u30ec\u30b9\u306e\u4e00\u7a2e\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306e\u6982\u5ff5\u3001\u8d77\u6e90\u3001\u69cb\u9020\u3001\u304a\u3088\u3073\u72ec\u81ea\u306e\u6a5f\u80fd\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306e\u8d77\u6e90<\/h2>\n<p>\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 \u30d7\u30ed\u30c8\u30b3\u30eb (IP) \u81ea\u4f53\u306e\u958b\u767a\u3068\u3068\u3082\u306b\u8a95\u751f\u3057\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u30011970 \u5e74\u4ee3\u306b\u56fd\u9632\u9ad8\u7b49\u7814\u7a76\u8a08\u753b\u5c40 (DARPA) \u304c\u8a2d\u8a08\u3057\u305f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u30d0\u30c3\u30af\u30dc\u30fc\u30f3 \u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306e\u4e00\u90e8\u3068\u3057\u3066\u4f5c\u6210\u3055\u308c\u307e\u3057\u305f\u3002IP \u30a2\u30c9\u30ec\u30b9\u306e\u3055\u307e\u3056\u307e\u306a\u30af\u30e9\u30b9\u306e\u6982\u5ff5\u306f\u30011981 \u5e74\u306b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u6280\u8853\u7279\u5225\u8abf\u67fb\u59d4\u54e1\u4f1a (IETF) \u304c\u4f5c\u6210\u3057\u305f\u6587\u66f8 RFC 791 \u3067\u5c0e\u5165\u3055\u308c\u307e\u3057\u305f\u3002\u30af\u30e9\u30b9 C \u306f\u3001\u5c0f\u898f\u6a21\u4f01\u696d\u306a\u3069\u306e\u5c0f\u898f\u6a21\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5411\u3051\u306b\u8a2d\u8a08\u3055\u308c\u3001\u4e16\u754c\u898f\u6a21\u3067\u9ad8\u307e\u308b\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5897\u52a0\u306e\u30cb\u30fc\u30ba\u306b\u5bfe\u5fdc\u3057\u307e\u3057\u305f\u3002<\/p>\n<h2>\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306e\u6982\u5ff5\u306e\u62e1\u5f35<\/h2>\n<p>\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306f\u3001\u30af\u30e9\u30b9 A\u3001B\u3001D\u3001E \u3068\u3068\u3082\u306b\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30d0\u30fc\u30b8\u30e7\u30f3 4 (IPv4) \u30a2\u30c9\u30ec\u30b9\u6307\u5b9a\u30b9\u30ad\u30fc\u30e0\u306e\u4e00\u90e8\u3067\u3059\u3002\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306e\u7bc4\u56f2\u306f 192.0.0.0 \u304b\u3089 223.255.255.255 \u3067\u3059\u3002\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306e\u6700\u521d\u306e 3 \u30aa\u30af\u30c6\u30c3\u30c8 (24 \u30d3\u30c3\u30c8) \u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a2\u30c9\u30ec\u30b9\u6307\u5b9a\u306b\u4f7f\u7528\u3055\u308c\u3001\u6700\u5f8c\u306e\u30aa\u30af\u30c6\u30c3\u30c8 (8 \u30d3\u30c3\u30c8) \u306f\u30db\u30b9\u30c8 \u30a2\u30c9\u30ec\u30b9\u6307\u5b9a\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9 192.168.1.2 \u306e\u5834\u5408:<\/p>\n<ul>\n<li>192.168.1\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30c9\u30ec\u30b9\u3067\u3059<\/li>\n<li>.2\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u30db\u30b9\u30c8\u30a2\u30c9\u30ec\u30b9\u3067\u3059<\/li>\n<\/ul>\n<h2>\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306e\u5185\u90e8\u69cb\u9020\u3068\u52d5\u4f5c<\/h2>\n<p>\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306e\u69cb\u9020\u306b\u306f\u3001\u305d\u308c\u305e\u308c 8 \u30d3\u30c3\u30c8\u3092\u542b\u3080 4 \u3064\u306e\u30aa\u30af\u30c6\u30c3\u30c8 (\u5408\u8a08 32 \u30d3\u30c3\u30c8) \u304c\u542b\u307e\u308c\u307e\u3059\u3002\u6700\u521d\u306e 3 \u3064\u306e\u30aa\u30af\u30c6\u30c3\u30c8\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a2\u30c9\u30ec\u30b9\u5c02\u7528\u3067\u3001\u6700\u5f8c\u306e\u30aa\u30af\u30c6\u30c3\u30c8\u306f\u30db\u30b9\u30c8 \u30a2\u30c9\u30ec\u30b9\u5c02\u7528\u3067\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u3070\u3001\u4e00\u822c\u7684\u306a\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306f NNNH \u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u3001N \u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3001H \u306f\u30db\u30b9\u30c8\u3092\u8868\u3057\u307e\u3059\u3002\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3054\u3068\u306b 0 \u304b\u3089 255 \u307e\u3067\u3001\u6700\u5927 256 (2^8) \u500b\u306e\u30db\u30b9\u30c8 \u30a2\u30c9\u30ec\u30b9\u304c\u8a31\u53ef\u3055\u308c\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30a2\u30c9\u30ec\u30b9 .0 (\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u8b58\u5225\u306b\u4f7f\u7528) \u3068 .255 (\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u306e\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8\u306b\u4f7f\u7528) \u306f\u4e88\u7d04\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u5b9f\u969b\u306b\u4f7f\u7528\u3067\u304d\u308b\u30db\u30b9\u30c8 \u30a2\u30c9\u30ec\u30b9\u306e\u6570\u306f 254 \u3067\u3059\u3002<\/p>\n<h2>\u30af\u30e9\u30b9C IP\u30a2\u30c9\u30ec\u30b9\u306e\u4e3b\u306a\u7279\u5fb4<\/h2>\n<ul>\n<li>\u7bc4\u56f2: \u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306e\u7bc4\u56f2\u306f 192.0.0.0 \uff5e 223.255.255.255 \u3067\u3059\u3002<\/li>\n<li>\u30db\u30b9\u30c8: \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3054\u3068\u306b\u6700\u5927 254 \u53f0\u306e\u30db\u30b9\u30c8 (\u30c7\u30d0\u30a4\u30b9) \u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002<\/li>\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af: \u7d04 200 \u4e07\u3068\u3044\u3046\u591a\u6570\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u307e\u3059\u3002<\/li>\n<li>\u4f7f\u7528\u4f8b: \u5c0f\u898f\u6a21\u304b\u3089\u4e2d\u898f\u6a21\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u3088\u304f\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306e\u7a2e\u985e<\/h2>\n<p>\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306e\u4e3b\u306a\u30bf\u30a4\u30d7\u306f\u3001\u30d1\u30d6\u30ea\u30c3\u30af\u3068\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30bf\u30a4\u30d7<\/th>\n<th>\u8aac\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u516c\u5171<\/td>\n<td>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3067\u4f7f\u7528\u3059\u308b\u305f\u3081\u306b IANA \u306b\u3088\u3063\u3066\u5272\u308a\u5f53\u3066\u3089\u308c\u307e\u3059\u3002\u5404\u30d1\u30d6\u30ea\u30c3\u30af IP \u30a2\u30c9\u30ec\u30b9\u306f\u30b0\u30ed\u30fc\u30d0\u30eb\u306b\u4e00\u610f\u3067\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8<\/td>\n<td>\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067\u306e\u4f7f\u7528\u306e\u305f\u3081\u306b\u4e88\u7d04\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3089\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u3067\u304d\u305a\u3001RFC 1918 \u3067\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30af\u30e9\u30b9 C \u306e\u5834\u5408\u3001\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 IP \u30a2\u30c9\u30ec\u30b9\u306e\u7bc4\u56f2\u306f 192.168.0.0 \uff5e 192.168.255.255 \u3067\u3059\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306e\u5229\u7528: \u554f\u984c\u3068\u89e3\u6c7a\u7b56<\/h2>\n<p>\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306f\u4e3b\u306b\u3001\u5c0f\u898f\u6a21\u304b\u3089\u4e2d\u898f\u6a21\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3067\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u306e\u6f5c\u5728\u7684\u306a\u8ab2\u984c\u306e 1 \u3064\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u5185\u3067\u4f7f\u7528\u53ef\u80fd\u306a\u30db\u30b9\u30c8 \u30a2\u30c9\u30ec\u30b9\u304c\u67af\u6e07\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u554f\u984c\u306f\u3001\u6b21\u306e\u65b9\u6cd5\u3067\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30b5\u30d6\u30cd\u30c3\u30c8\u5316: \u5927\u898f\u6a21\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u5c0f\u898f\u6a21\u306a\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u5206\u5272\u3057\u307e\u3059\u3002<\/li>\n<li>\u30b9\u30fc\u30d1\u30fc\u30cd\u30c3\u30c8: \u8907\u6570\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092 1 \u3064\u306b\u7d50\u5408\u3057\u307e\u3059\u3002<\/li>\n<li>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af \u30a2\u30c9\u30ec\u30b9\u5909\u63db (NAT): \u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 \u30a2\u30af\u30bb\u30b9\u7528\u306b\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8 IP \u30a2\u30c9\u30ec\u30b9\u3092\u30d1\u30d6\u30ea\u30c3\u30af IP \u30a2\u30c9\u30ec\u30b9\u306b\u5909\u63db\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u6bd4\u8f03\u3068\u4e3b\u306a\u7279\u5fb4<\/h2>\n<p>\u4ee5\u4e0b\u306f\u3001\u30af\u30e9\u30b9 C IP \u3068\u305d\u306e\u5bfe\u5fdc\u3059\u308b IP \u306e\u6bd4\u8f03\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>IP\u30af\u30e9\u30b9<\/th>\n<th>\u7bc4\u56f2<\/th>\n<th>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d3\u30c3\u30c8<\/th>\n<th>\u30db\u30b9\u30c8\u30d3\u30c3\u30c8<\/th>\n<th>\u30de\u30c3\u30af\u30b9\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/th>\n<th>\u6700\u5927\u30db\u30b9\u30c8\u6570<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u3042<\/td>\n<td>1.0.0.0 \u2013 126.255.255.255<\/td>\n<td>8<\/td>\n<td>24<\/td>\n<td>128<\/td>\n<td>16,777,216<\/td>\n<\/tr>\n<tr>\n<td>B<\/td>\n<td>128.0.0.0 \u2013 191.255.255.255<\/td>\n<td>16<\/td>\n<td>16<\/td>\n<td>16,384<\/td>\n<td>65,536<\/td>\n<\/tr>\n<tr>\n<td>C<\/td>\n<td>192.0.0.0 \u2013 223.255.255.255<\/td>\n<td>24<\/td>\n<td>8<\/td>\n<td>2,097,152<\/td>\n<td>254<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u5c06\u6765\u306e\u5c55\u671b\u3068\u6280\u8853<\/h2>\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u6025\u901f\u306a\u6210\u9577\u306b\u3088\u308a\u3001\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u3092\u542b\u3080 IPv4 \u30a2\u30c9\u30ec\u30b9\u7a7a\u9593\u306f\u307b\u307c\u67af\u6e07\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u5236\u9650\u3092\u514b\u670d\u3059\u308b\u305f\u3081\u306b\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 \u30d7\u30ed\u30c8\u30b3\u30eb \u30d0\u30fc\u30b8\u30e7\u30f3 6 (IPv6) \u304c\u958b\u767a\u3055\u308c\u307e\u3057\u305f\u3002IPv6 \u306e\u30a2\u30c9\u30ec\u30b9\u7a7a\u9593\u306f 128 \u30d3\u30c3\u30c8\u3068\u5e83\u5927\u3067\u3001IPv4 \u306e 32 \u30d3\u30c3\u30c8\u3088\u308a\u3082\u5927\u5e45\u306b\u5927\u304d\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u5c06\u6765\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f IPv6 \u306b\u79fb\u884c\u3059\u308b\u3068\u4e88\u60f3\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2>\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u3068\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc<\/h2>\n<p>\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u30af\u30e9\u30b9 C IP \u30a2\u30c9\u30ec\u30b9\u3092\u5229\u7528\u3057\u3066\u533f\u540d\u30d6\u30e9\u30a6\u30b8\u30f3\u30b0\u3092\u63d0\u4f9b\u3067\u304d\u307e\u3059\u3002\u5404\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306b\u7570\u306a\u308b\u30af\u30e9\u30b9 C IP \u3092\u5272\u308a\u5f53\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u305f\u3081\u3001\u591a\u304f\u306e IP \u306b\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u5206\u6563\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u3001Web \u30b9\u30af\u30ec\u30a4\u30d4\u30f3\u30b0\u3084\u8907\u6570\u306e\u30bd\u30fc\u30b7\u30e3\u30eb \u30e1\u30c7\u30a3\u30a2 \u30a2\u30ab\u30a6\u30f3\u30c8\u306e\u7ba1\u7406\u306a\u3069\u3001\u9ad8\u5ea6\u306a\u533f\u540d\u6027\u3068 IP \u306e\u591a\u69d8\u6027\u3092\u5fc5\u8981\u3068\u3059\u308b\u30bf\u30b9\u30af\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002OneProxy \u306a\u3069\u306e\u4f01\u696d\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u9867\u5ba2\u306e\u30cb\u30fc\u30ba\u3092\u6e80\u305f\u3059\u305f\u3081\u306b\u3001\u3055\u307e\u3056\u307e\u306a\u30af\u30e9\u30b9 C IP \u30d7\u30ed\u30ad\u30b7\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n<ul>\n<li><a href=\"https:\/\/www.darpa.mil\/work-with-us\/technology-timeline\/internet-protocol\" target=\"_new\" rel=\"noopener nofollow\">\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 \u30d7\u30ed\u30c8\u30b3\u30eb \u2013 DARPA<\/a><\/li>\n<li><a href=\"https:\/\/www.ietf.org\" target=\"_new\" rel=\"noopener nofollow\">\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8 \u30a8\u30f3\u30b8\u30cb\u30a2\u30ea\u30f3\u30b0 \u30bf\u30b9\u30af \u30d5\u30a9\u30fc\u30b9 (IETF)<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc791\" target=\"_new\" rel=\"noopener nofollow\">RFC 791 \u2013 IETF<\/a><\/li>\n<li><a href=\"https:\/\/tools.ietf.org\/html\/rfc1918\" target=\"_new\" rel=\"noopener nofollow\">RFC 1918 \u2013 IETF<\/a><\/li>\n<li><a href=\"https:\/\/oneproxy.pro\/jp\/\" target=\"_new\" rel=\"noopener\">OneProxy<\/a><\/li>\n<\/ul>","protected":false},"featured_media":476242,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476241","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Understanding Class C IP Address<\/mark>","faq_items":[{"question":"What is a Class C IP address?","answer":"<p>A Class C IP address is a type of IP address that is designated for network and host addressing within local networks. These addresses are part of the Internet Protocol version 4 (IPv4) scheme and range from 192.0.0.0 to 223.255.255.255.<\/p>"},{"question":"When was the Class C IP address introduced?","answer":"<p>Class C IP address was introduced as part of the Internet's backbone architecture designed by the Defense Advanced Research Projects Agency (DARPA) in the 1970s. The concept of different classes of IP addresses was officially documented in RFC 791 in 1981 by the Internet Engineering Task Force (IETF).<\/p>"},{"question":"How is a Class C IP address structured?","answer":"<p>A Class C IP address is structured into four octets, each containing eight bits, totalling 32 bits. The first three octets (24 bits) are used for network addressing, while the last octet (8 bits) is used for host addressing within the network.<\/p>"},{"question":"What are the key features of a Class C IP address?","answer":"<p>The key features of a Class C IP address include its range from 192.0.0.0 to 223.255.255.255, its ability to support up to 254 hosts per network, and its common usage in small to medium-sized networks.<\/p>"},{"question":"What types of Class C IP address exist?","answer":"<p>There are two types of Class C IP addresses: Public and Private. Public IP addresses are assigned by the Internet Assigned Numbers Authority (IANA) and are used on the internet, while private IP addresses are used within private networks and are not routable on the internet.<\/p>"},{"question":"What are some common challenges with Class C IP addresses and how can they be mitigated?","answer":"<p>One common challenge with Class C IP addresses is the exhaustion of available host addresses within a network. This can be mitigated through techniques such as subnetting, supernetting, and Network Address Translation (NAT).<\/p>"},{"question":"How do Class C IP addresses relate to proxy servers?","answer":"<p>Proxy servers can utilize Class C IP addresses to provide anonymous browsing. Each proxy server can be assigned a different Class C IP, allowing for distribution of requests across multiple IPs. This is especially useful for tasks requiring high anonymity and IP diversity.<\/p>"},{"question":"What is the future of Class C IP addresses?","answer":"<p>The future of Class C and all IPv4 addresses is the transition towards Internet Protocol version 6 (IPv6), which was developed to overcome the limitation of IPv4's address space exhaustion. IPv6 has a much larger address space of 128 bits, as compared to the 32 bits in IPv4.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/476241","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\/476241\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/476242"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=476241"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}