{"id":32,"date":"2026-09-18T16:24:18","date_gmt":"2026-09-18T07:24:18","guid":{"rendered":"https:\/\/www.theipv6portal.org\/column\/who-allocates-ip-addresses\/"},"modified":"2026-09-18T16:24:18","modified_gmt":"2026-09-18T07:24:18","slug":"who-allocates-ip-addresses","status":"publish","type":"post","link":"https:\/\/www.theipv6portal.org\/column\/who-allocates-ip-addresses\/","title":{"rendered":"IP\u30a2\u30c9\u30ec\u30b9\u306f\u8ab0\u304c\u914d\u3063\u3066\u3044\u308b\u306e\u304b \u2014 RIR\u30fbLIR\u30fbAS\u756a\u53f7\u306e\u95a2\u4fc2"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">IP\u30a2\u30c9\u30ec\u30b9\u306f\u8ab0\u304b\u304c\u52dd\u624b\u306b\u540d\u4e57\u308c\u308b\u3082\u306e\u3067\u306f\u306a\u304f\u3001<strong>\u4e16\u754c\u7684\u306a\u968e\u5c64\u69cb\u9020\u306b\u3082\u3068\u3065\u3044\u3066\u914d\u5206<\/strong>\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u4ed5\u7d44\u307f\u3092\u77e5\u3063\u3066\u304a\u304f\u3068\u3001WHOIS\u306e\u7d50\u679c\u304c\u8aad\u3081\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u300c\u3053\u306eIP\u306f\u3069\u3053\u306e\u7d44\u7e54\u306e\u3082\u306e\u304b\u300d\u3092\u81ea\u5206\u3067\u5224\u65ad\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">IANA\u3092\u9802\u70b9\u3068\u3057\u305f4\u6bb5\u69cb\u9020<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.theipv6portal.org\/column\/wp-content\/uploads\/2026\/09\/fig-rir.png\" alt=\"IANA\u3092\u9802\u70b9\u306b\u3001APNIC\u30fbARIN\u30fbRIPE NCC\u30fbLACNIC\u30fbAFRINIC\u306e5\u3064\u306eRIR\u3001NIR\/LIR\u3001\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u3078\u3068\u914d\u5206\u3055\u308c\u308b\u968e\u5c64\u69cb\u9020\u306e\u56f3\"\/><figcaption class=\"wp-element-caption\">IANA\u2192RIR\u2192NIR\/LIR\u2192\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u306e\u9806\u306b\u914d\u5206\u3055\u308c\u308b<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u9802\u70b9\u306b\u3042\u308b\u306e\u304c<strong>IANA<\/strong>\u3067\u3001\u30a2\u30c9\u30ec\u30b9\u7a7a\u9593\u5168\u4f53\u3092\u7ba1\u7406\u3057\u3066\u3044\u307e\u3059\u3002IANA\u306f\u5927\u304d\u306a\u30d6\u30ed\u30c3\u30af\u30925\u3064\u306e<strong>RIR\uff08\u5730\u57df\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u30ec\u30b8\u30b9\u30c8\u30ea\uff09<\/strong>\u306b\u5272\u308a\u5f53\u3066\u3001RIR\u304c\u3055\u3089\u306b\u5404\u56fd\u306e\u30ec\u30b8\u30b9\u30c8\u30ea\u3084ISP\u3078\u3001\u305d\u3057\u3066\u6700\u7d42\u7684\u306b\u4f01\u696d\u3084\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u3078\u3068\u914d\u3089\u308c\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">5\u3064\u306eRIR\u3068\u62c5\u5f53\u5730\u57df<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>APNIC<\/strong> \u2014 \u30a2\u30b8\u30a2\u592a\u5e73\u6d0b\u3002\u65e5\u672c\u306f\u3053\u3053\u306e\u7ba1\u8f44\u3067\u3001\u56fd\u5185\u3067\u306fJPNIC\u304c\u7a93\u53e3\u306b\u306a\u308b<\/li>\n<li><strong>ARIN<\/strong> \u2014 \u5317\u7c73<\/li>\n<li><strong>RIPE NCC<\/strong> \u2014 \u6b27\u5dde\u30fb\u4e2d\u6771\u30fb\u4e2d\u592e\u30a2\u30b8\u30a2<\/li>\n<li><strong>LACNIC<\/strong> \u2014 \u4e2d\u5357\u7c73\u30fb\u30ab\u30ea\u30d6\u6d77<\/li>\n<li><strong>AFRINIC<\/strong> \u2014 \u30a2\u30d5\u30ea\u30ab<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">WHOIS\u3067IP\u30a2\u30c9\u30ec\u30b9\u3092\u5f15\u3044\u305f\u3068\u304d\u3001\u5fdc\u7b54\u3057\u3066\u304f\u308b\u306e\u306f\u305d\u306eIP\u3092\u7ba1\u8f44\u3059\u308bRIR\u3067\u3059\u3002<code>8.8.8.8<\/code> \u3092\u5f15\u304f\u3068ARIN\u304c\u5fdc\u7b54\u3059\u308b\u306e\u306f\u3001Google\u304c\u305d\u306e\u7bc4\u56f2\u3092\u5317\u7c73\u3067\u5272\u308a\u5f53\u3066\u3089\u308c\u3066\u3044\u308b\u304b\u3089\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">AS\u756a\u53f7 \u2014 \u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u305d\u306e\u3082\u306e\u306e\u8b58\u5225\u5b50<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IP\u30a2\u30c9\u30ec\u30b9\u3068\u4e26\u3093\u3067RIR\u304c\u7ba1\u7406\u3057\u3066\u3044\u308b\u306e\u304c<strong>AS\u756a\u53f7\uff08Autonomous System Number\uff09<\/strong>\u3067\u3059\u3002\u3053\u308c\u306f\u300c\u72ec\u81ea\u306e\u65b9\u91dd\u3067\u7d4c\u8def\u5236\u5fa1\u3092\u884c\u3046\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u307e\u3068\u307e\u308a\u300d\u306b\u4ed8\u3051\u3089\u308c\u308b\u756a\u53f7\u3067\u3001ISP\u3084\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u304c\u6301\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306e\u7d4c\u8def\u5236\u5fa1\uff08BGP\uff09\u306f<strong>\u3053\u306eAS\u540c\u58eb\u304c\u300c\u3046\u3061\u304b\u3089\u306f\u3053\u306e\u30a2\u30c9\u30ec\u30b9\u7bc4\u56f2\u306b\u884c\u3051\u308b\u300d\u3068\u4f1d\u3048\u5408\u3046\u3053\u3068<\/strong>\u3067\u6210\u308a\u7acb\u3063\u3066\u3044\u307e\u3059\u3002IP\u30a2\u30c9\u30ec\u30b9\u3092\u8abf\u3079\u3066AS\u756a\u53f7\u304c\u308f\u304b\u308b\u3068\u3001\u305d\u306eIP\u304c\u3069\u306e\u4e8b\u696d\u8005\u306e\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u306b\u3042\u308b\u304b\u304c\u7279\u5b9a\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7dad\u6301\u306b\u306f\u30b3\u30b9\u30c8\u304c\u304b\u304b\u308b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IP\u30a2\u30c9\u30ec\u30b9\u3084AS\u756a\u53f7\u306f\u8cb7\u3044\u5207\u308a\u3067\u306f\u306a\u304f\u3001<strong>RIR\u3078\u306e\u5e74\u4f1a\u8cbb\u3092\u6255\u3044\u7d9a\u3051\u308b\u3053\u3068\u3067\u5272\u308a\u5f53\u3066\u3092\u7dad\u6301<\/strong>\u3059\u308b\u4ed5\u7d44\u307f\u3067\u3059\u3002\u6599\u91d1\u4f53\u7cfb\u306fRIR\u3054\u3068\u306b\u8003\u3048\u65b9\u304c\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>APNIC<\/strong> \u2014 \u4fdd\u6709\u30a2\u30c9\u30ec\u30b9\u91cf\u306b\u5fdc\u3058\u3066\u6bb5\u968e\u7684\u306b\u5897\u3048\u308b\u8a08\u7b97\u5f0f\u3092\u63a1\u7528<\/li>\n<li><strong>ARIN<\/strong> \u2014 \u4fdd\u6709\u91cf\u3067\u533a\u5207\u3089\u308c\u305f\u30c6\u30a3\u30a2\uff08\u533a\u5206\uff09\u3054\u3068\u306e\u5b9a\u984d<\/li>\n<li><strong>RIPE NCC<\/strong> \u2014 \u4fdd\u6709\u91cf\u306b\u3088\u3089\u306a\u3044\u30e1\u30f3\u30d0\u30fc\u5b9a\u984d\u304c\u57fa\u672c<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">IPv4\u304c\u67af\u6e07\u3057\u305f\u73fe\u5728\u3001\u30a2\u30c9\u30ec\u30b9\u306f\u79fb\u8ee2\u5e02\u5834\u3067\u53d6\u5f15\u3055\u308c\u308b\u8cc7\u7523\u306b\u3082\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u4fdd\u6709\u30b3\u30b9\u30c8\u306e\u76ee\u5b89\u306f<a href=\"https:\/\/www.theipv6portal.org\/rirfee\" target=\"_blank\" rel=\"noopener\">RIR\u5e74\u4f1a\u8cbb\u30b7\u30df\u30e5\u30ec\u30fc\u30bf\u30fc<\/a>\u3067\u8a66\u7b97\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8abf\u3079\u3066\u307f\u308b<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.theipv6portal.org\/ipwhois\" target=\"_blank\" rel=\"noopener\">IP\u30a2\u30c9\u30ec\u30b9WHOIS\u691c\u7d22<\/a>\u306bIP\u3092\u5165\u529b\u3059\u308b\u3068\u3001<strong>\u5272\u308a\u5f53\u3066\u7d44\u7e54\u30fb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7bc4\u56f2\u30fbAS\u756a\u53f7\u30fb\u9006\u5f15\u304d\u30db\u30b9\u30c8\u540d<\/strong>\u304c\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u30a2\u30af\u30bb\u30b9\u30ed\u30b0\u306b\u6b8b\u3063\u305f\u898b\u6163\u308c\u306a\u3044IP\u304c\u3001\u3069\u3053\u306e\u30af\u30e9\u30a6\u30c9\u3084ISP\u306e\u3082\u306e\u304b\u3092\u5224\u65ad\u3059\u308b\u6750\u6599\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>IP\u30a2\u30c9\u30ec\u30b9\u306fIANA\u2192RIR\u2192NIR\/LIR\u2192\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u306e\u9806\u306b\u914d\u5206\u3055\u308c\u308b<\/li>\n<li>\u65e5\u672c\u306fAPNIC\u306e\u7ba1\u8f44\u3002\u56fd\u5185\u7a93\u53e3\u306fJPNIC<\/li>\n<li>AS\u756a\u53f7\u306f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u5358\u4f4d\u3067\u3001BGP\u306b\u3088\u308b\u7d4c\u8def\u5236\u5fa1\u306e\u4e3b\u4f53<\/li>\n<li>\u5272\u308a\u5f53\u3066\u306e\u7dad\u6301\u306b\u306f\u5e74\u4f1a\u8cbb\u304c\u5fc5\u8981\u3002\u6599\u91d1\u306e\u8003\u3048\u65b9\u306fRIR\u3054\u3068\u306b\u7570\u306a\u308b<\/li>\n<\/ul>\n\n","protected":false},"excerpt":{"rendered":"<p>IANA\u3092\u9802\u70b9\u306bAPNIC\u306a\u30695\u3064\u306eRIR\u3092\u7d4c\u3066\u914d\u5206\u3055\u308c\u308b\u968e\u5c64\u69cb\u9020\u3068\u3001AS\u756a\u53f7\u306e\u5f79\u5272\u3001\u5272\u308a\u5f53\u3066\u7dad\u6301\u306b\u304b\u304b\u308b\u5e74\u4f1a\u8cbb\u306e\u8003\u3048\u65b9\u3092\u6574\u7406\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":0,"featured_media":26,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"swell_btn_cv_data":"","footnotes":""},"categories":[4],"tags":[],"class_list":["post-32","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ip-ipv6"],"_links":{"self":[{"href":"https:\/\/www.theipv6portal.org\/column\/wp-json\/wp\/v2\/posts\/32","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.theipv6portal.org\/column\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.theipv6portal.org\/column\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/www.theipv6portal.org\/column\/wp-json\/wp\/v2\/comments?post=32"}],"version-history":[{"count":0,"href":"https:\/\/www.theipv6portal.org\/column\/wp-json\/wp\/v2\/posts\/32\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.theipv6portal.org\/column\/wp-json\/wp\/v2\/media\/26"}],"wp:attachment":[{"href":"https:\/\/www.theipv6portal.org\/column\/wp-json\/wp\/v2\/media?parent=32"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.theipv6portal.org\/column\/wp-json\/wp\/v2\/categories?post=32"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.theipv6portal.org\/column\/wp-json\/wp\/v2\/tags?post=32"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}