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無料 · ネットワーク・IT インフラ

IPv6 サブネット設計.

必要な /64 の数から、ニブル境界に揃えた拠点プレフィックスを割り当て、すべての /64 を一覧にします。

はじめる前に

一部の技術的な操作項目は英語です。Unicode テキストに対応していますが、ファイル形式と出力言語はツールによって異なります。

技術的な制限は以下に英語で記載されています。大きなファイルを処理する前や結果を使用する前に確認してください。

CALCULATED IN YOUR BROWSER · NOTHING IS UPLOADED
Sites or groups
Sites allocated5 / 52001:db8:abcd::/48
/64 subnets in the prefix
65,536
/64 subnets requested
267
Reverse zone of the prefix
d.c.b.a.8.b.d.0.1.0.0.2.ip6.arpa

Site allocation

Site/64s neededSite prefix/64 capacityFirst /64Last /64 used
Headquarters402001:db8:abcd::/562562001:db8:abcd::/642001:db8:abcd:27::/64
Data centre2002001:db8:abcd:100::/562562001:db8:abcd:100::/642001:db8:abcd:1c7::/64
Branch Paris122001:db8:abcd:200::/60162001:db8:abcd:200::/642001:db8:abcd:20b::/64
Branch Madrid122001:db8:abcd:210::/60162001:db8:abcd:210::/642001:db8:abcd:21b::/64
Lab32001:db8:abcd:220::/60162001:db8:abcd:220::/642001:db8:abcd:222::/64

Every /64 assignment

Site#Subnet
Headquarters12001:db8:abcd::/64
Headquarters22001:db8:abcd:1::/64
Headquarters32001:db8:abcd:2::/64
Headquarters42001:db8:abcd:3::/64
Headquarters52001:db8:abcd:4::/64
Headquarters62001:db8:abcd:5::/64
Headquarters72001:db8:abcd:6::/64
Headquarters82001:db8:abcd:7::/64
Headquarters92001:db8:abcd:8::/64
Headquarters102001:db8:abcd:9::/64
Headquarters112001:db8:abcd:a::/64
Headquarters122001:db8:abcd:b::/64
Headquarters132001:db8:abcd:c::/64
Headquarters142001:db8:abcd:d::/64
Headquarters152001:db8:abcd:e::/64
Headquarters162001:db8:abcd:f::/64
Headquarters172001:db8:abcd:10::/64
Headquarters182001:db8:abcd:11::/64
Headquarters192001:db8:abcd:12::/64
Headquarters202001:db8:abcd:13::/64
Headquarters212001:db8:abcd:14::/64
Headquarters222001:db8:abcd:15::/64
Headquarters232001:db8:abcd:16::/64
Headquarters242001:db8:abcd:17::/64
Headquarters252001:db8:abcd:18::/64
Headquarters262001:db8:abcd:19::/64
Headquarters272001:db8:abcd:1a::/64
Headquarters282001:db8:abcd:1b::/64
Headquarters292001:db8:abcd:1c::/64
Headquarters302001:db8:abcd:1d::/64
Headquarters312001:db8:abcd:1e::/64
Headquarters322001:db8:abcd:1f::/64
Headquarters332001:db8:abcd:20::/64
Headquarters342001:db8:abcd:21::/64
Headquarters352001:db8:abcd:22::/64
Headquarters362001:db8:abcd:23::/64
Headquarters372001:db8:abcd:24::/64
Headquarters382001:db8:abcd:25::/64
Headquarters392001:db8:abcd:26::/64
Headquarters402001:db8:abcd:27::/64
Data centre12001:db8:abcd:100::/64
Data centre22001:db8:abcd:101::/64
Data centre32001:db8:abcd:102::/64
Data centre42001:db8:abcd:103::/64
Data centre52001:db8:abcd:104::/64
Data centre62001:db8:abcd:105::/64
Data centre72001:db8:abcd:106::/64
Data centre82001:db8:abcd:107::/64
Data centre92001:db8:abcd:108::/64
Data centre102001:db8:abcd:109::/64
Data centre112001:db8:abcd:10a::/64
Data centre122001:db8:abcd:10b::/64
Data centre132001:db8:abcd:10c::/64
Data centre142001:db8:abcd:10d::/64
Data centre152001:db8:abcd:10e::/64
Data centre162001:db8:abcd:10f::/64
Data centre172001:db8:abcd:110::/64
Data centre182001:db8:abcd:111::/64
Data centre192001:db8:abcd:112::/64
Data centre202001:db8:abcd:113::/64
Data centre212001:db8:abcd:114::/64
Data centre222001:db8:abcd:115::/64
Data centre232001:db8:abcd:116::/64
Data centre242001:db8:abcd:117::/64
Data centre252001:db8:abcd:118::/64
Data centre262001:db8:abcd:119::/64
Data centre272001:db8:abcd:11a::/64
Data centre282001:db8:abcd:11b::/64
Data centre292001:db8:abcd:11c::/64
Data centre302001:db8:abcd:11d::/64
Data centre312001:db8:abcd:11e::/64
Data centre322001:db8:abcd:11f::/64
Data centre332001:db8:abcd:120::/64
Data centre342001:db8:abcd:121::/64
Data centre352001:db8:abcd:122::/64
Data centre362001:db8:abcd:123::/64
Data centre372001:db8:abcd:124::/64
Data centre382001:db8:abcd:125::/64
Data centre392001:db8:abcd:126::/64
Data centre402001:db8:abcd:127::/64
Data centre412001:db8:abcd:128::/64
Data centre422001:db8:abcd:129::/64
Data centre432001:db8:abcd:12a::/64
Data centre442001:db8:abcd:12b::/64
Data centre452001:db8:abcd:12c::/64
Data centre462001:db8:abcd:12d::/64
Data centre472001:db8:abcd:12e::/64
Data centre482001:db8:abcd:12f::/64
Data centre492001:db8:abcd:130::/64
Data centre502001:db8:abcd:131::/64
Data centre512001:db8:abcd:132::/64
Data centre522001:db8:abcd:133::/64
Data centre532001:db8:abcd:134::/64
Data centre542001:db8:abcd:135::/64
Data centre552001:db8:abcd:136::/64
Data centre562001:db8:abcd:137::/64
Data centre572001:db8:abcd:138::/64
Data centre582001:db8:abcd:139::/64
Data centre592001:db8:abcd:13a::/64
Data centre602001:db8:abcd:13b::/64
Data centre612001:db8:abcd:13c::/64
Data centre622001:db8:abcd:13d::/64
Data centre632001:db8:abcd:13e::/64
Data centre642001:db8:abcd:13f::/64
Data centre652001:db8:abcd:140::/64
Data centre662001:db8:abcd:141::/64
Data centre672001:db8:abcd:142::/64
Data centre682001:db8:abcd:143::/64
Data centre692001:db8:abcd:144::/64
Data centre702001:db8:abcd:145::/64
Data centre712001:db8:abcd:146::/64
Data centre722001:db8:abcd:147::/64
Data centre732001:db8:abcd:148::/64
Data centre742001:db8:abcd:149::/64
Data centre752001:db8:abcd:14a::/64
Data centre762001:db8:abcd:14b::/64
Data centre772001:db8:abcd:14c::/64
Data centre782001:db8:abcd:14d::/64
Data centre792001:db8:abcd:14e::/64
Data centre802001:db8:abcd:14f::/64
Data centre812001:db8:abcd:150::/64
Data centre822001:db8:abcd:151::/64
Data centre832001:db8:abcd:152::/64
Data centre842001:db8:abcd:153::/64
Data centre852001:db8:abcd:154::/64
Data centre862001:db8:abcd:155::/64
Data centre872001:db8:abcd:156::/64
Data centre882001:db8:abcd:157::/64
Data centre892001:db8:abcd:158::/64
Data centre902001:db8:abcd:159::/64
Data centre912001:db8:abcd:15a::/64
Data centre922001:db8:abcd:15b::/64
Data centre932001:db8:abcd:15c::/64
Data centre942001:db8:abcd:15d::/64
Data centre952001:db8:abcd:15e::/64
Data centre962001:db8:abcd:15f::/64
Data centre972001:db8:abcd:160::/64
Data centre982001:db8:abcd:161::/64
Data centre992001:db8:abcd:162::/64
Data centre1002001:db8:abcd:163::/64
Data centre1012001:db8:abcd:164::/64
Data centre1022001:db8:abcd:165::/64
Data centre1032001:db8:abcd:166::/64
Data centre1042001:db8:abcd:167::/64
Data centre1052001:db8:abcd:168::/64
Data centre1062001:db8:abcd:169::/64
Data centre1072001:db8:abcd:16a::/64
Data centre1082001:db8:abcd:16b::/64
Data centre1092001:db8:abcd:16c::/64
Data centre1102001:db8:abcd:16d::/64
Data centre1112001:db8:abcd:16e::/64
Data centre1122001:db8:abcd:16f::/64
Data centre1132001:db8:abcd:170::/64
Data centre1142001:db8:abcd:171::/64
Data centre1152001:db8:abcd:172::/64
Data centre1162001:db8:abcd:173::/64
Data centre1172001:db8:abcd:174::/64
Data centre1182001:db8:abcd:175::/64
Data centre1192001:db8:abcd:176::/64
Data centre1202001:db8:abcd:177::/64
Data centre1212001:db8:abcd:178::/64
Data centre1222001:db8:abcd:179::/64
Data centre1232001:db8:abcd:17a::/64
Data centre1242001:db8:abcd:17b::/64
Data centre1252001:db8:abcd:17c::/64
Data centre1262001:db8:abcd:17d::/64
Data centre1272001:db8:abcd:17e::/64
Data centre1282001:db8:abcd:17f::/64
Data centre1292001:db8:abcd:180::/64
Data centre1302001:db8:abcd:181::/64
Data centre1312001:db8:abcd:182::/64
Data centre1322001:db8:abcd:183::/64
Data centre1332001:db8:abcd:184::/64
Data centre1342001:db8:abcd:185::/64
Data centre1352001:db8:abcd:186::/64
Data centre1362001:db8:abcd:187::/64
Data centre1372001:db8:abcd:188::/64
Data centre1382001:db8:abcd:189::/64
Data centre1392001:db8:abcd:18a::/64
Data centre1402001:db8:abcd:18b::/64
Data centre1412001:db8:abcd:18c::/64
Data centre1422001:db8:abcd:18d::/64
Data centre1432001:db8:abcd:18e::/64
Data centre1442001:db8:abcd:18f::/64
Data centre1452001:db8:abcd:190::/64
Data centre1462001:db8:abcd:191::/64
Data centre1472001:db8:abcd:192::/64
Data centre1482001:db8:abcd:193::/64
Data centre1492001:db8:abcd:194::/64
Data centre1502001:db8:abcd:195::/64
Data centre1512001:db8:abcd:196::/64
Data centre1522001:db8:abcd:197::/64
Data centre1532001:db8:abcd:198::/64
Data centre1542001:db8:abcd:199::/64
Data centre1552001:db8:abcd:19a::/64
Data centre1562001:db8:abcd:19b::/64
Data centre1572001:db8:abcd:19c::/64
Data centre1582001:db8:abcd:19d::/64
Data centre1592001:db8:abcd:19e::/64
Data centre1602001:db8:abcd:19f::/64
Data centre1612001:db8:abcd:1a0::/64
Data centre1622001:db8:abcd:1a1::/64
Data centre1632001:db8:abcd:1a2::/64
Data centre1642001:db8:abcd:1a3::/64
Data centre1652001:db8:abcd:1a4::/64
Data centre1662001:db8:abcd:1a5::/64
Data centre1672001:db8:abcd:1a6::/64
Data centre1682001:db8:abcd:1a7::/64
Data centre1692001:db8:abcd:1a8::/64
Data centre1702001:db8:abcd:1a9::/64
Data centre1712001:db8:abcd:1aa::/64
Data centre1722001:db8:abcd:1ab::/64
Data centre1732001:db8:abcd:1ac::/64
Data centre1742001:db8:abcd:1ad::/64
Data centre1752001:db8:abcd:1ae::/64
Data centre1762001:db8:abcd:1af::/64
Data centre1772001:db8:abcd:1b0::/64
Data centre1782001:db8:abcd:1b1::/64
Data centre1792001:db8:abcd:1b2::/64
Data centre1802001:db8:abcd:1b3::/64
Data centre1812001:db8:abcd:1b4::/64
Data centre1822001:db8:abcd:1b5::/64
Data centre1832001:db8:abcd:1b6::/64
Data centre1842001:db8:abcd:1b7::/64
Data centre1852001:db8:abcd:1b8::/64
Data centre1862001:db8:abcd:1b9::/64
Data centre1872001:db8:abcd:1ba::/64
Data centre1882001:db8:abcd:1bb::/64
Data centre1892001:db8:abcd:1bc::/64
Data centre1902001:db8:abcd:1bd::/64
Data centre1912001:db8:abcd:1be::/64
Data centre1922001:db8:abcd:1bf::/64
Data centre1932001:db8:abcd:1c0::/64
Data centre1942001:db8:abcd:1c1::/64
Data centre1952001:db8:abcd:1c2::/64
Data centre1962001:db8:abcd:1c3::/64
Data centre1972001:db8:abcd:1c4::/64
Data centre1982001:db8:abcd:1c5::/64
Data centre1992001:db8:abcd:1c6::/64
Data centre2002001:db8:abcd:1c7::/64
Branch Paris12001:db8:abcd:200::/64
Branch Paris22001:db8:abcd:201::/64
Branch Paris32001:db8:abcd:202::/64
Branch Paris42001:db8:abcd:203::/64
Branch Paris52001:db8:abcd:204::/64
Branch Paris62001:db8:abcd:205::/64
Branch Paris72001:db8:abcd:206::/64
Branch Paris82001:db8:abcd:207::/64
Branch Paris92001:db8:abcd:208::/64
Branch Paris102001:db8:abcd:209::/64
Branch Paris112001:db8:abcd:20a::/64
Branch Paris122001:db8:abcd:20b::/64
Branch Madrid12001:db8:abcd:210::/64
Branch Madrid22001:db8:abcd:211::/64
Branch Madrid32001:db8:abcd:212::/64
Branch Madrid42001:db8:abcd:213::/64
Branch Madrid52001:db8:abcd:214::/64
Branch Madrid62001:db8:abcd:215::/64
Branch Madrid72001:db8:abcd:216::/64
Branch Madrid82001:db8:abcd:217::/64
Branch Madrid92001:db8:abcd:218::/64
Branch Madrid102001:db8:abcd:219::/64
Branch Madrid112001:db8:abcd:21a::/64
Branch Madrid122001:db8:abcd:21b::/64
Lab12001:db8:abcd:220::/64
Lab22001:db8:abcd:221::/64
Lab32001:db8:abcd:222::/64
  • Every LAN segment gets a /64, which SLAAC requires. Largest sites are placed first so each prefix stays aligned.
  • Common guidance (RIPE-690) is a /48 per organisation site and a /56 for small sites or homes.

使い方: IPv6 サブネット設計

データを入力するかファイルを選び、設定を調整して結果を生成します。コピーやダウンロードの前に結果を確認してください。

制限と対応形式

入力内容はお使いの端末で処理されます。

英語の技術説明

Prefix must be /64 or shorter. The per-/64 table lists up to 4,096 rows in the CSV. Everything is calculated in your browser; nothing is sent or probed on the network.

Each site needs a power of two of /64s; its prefix is 64 − ceil(log2(n)), rounded down to a multiple of 4 when nibble alignment is on. Sites are placed largest first so each prefix stays aligned.

In 2001:db8:abcd::/48, a data centre needing 200 /64s receives a /56, headquarters with 40 a /56 (nibble-aligned) and a lab with 3 a /60.

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