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IPv6 Subnet Calculator

Enter an IPv6 address with a prefix to see its network, address range, number of /64 subnets, and its full and short forms. You can also split the prefix into smaller subnets.

$ ipcalc
Try:2001:db8:abcd::1/482001:db8::/32fd00:1234::/56fe80::1/64
IPv4 calculator →
documentation2001:db8:0:f900::/56
network2001:db8:0:f900::/56
first host2001:db8:0:f900::
last host2001:db8:0:f9ff:ffff:ffff:ffff:ffff
addresses2⁷² = 4,722,366,482,869,645,213,696
/64 subnets256
short form2001:db8:0:f900::
ipcalc 2001:db8:0:f900::/56
address2001:0db8:0000:f900:0000:0000:0000:0000
network2001:0db8:0000:f900:0000:0000:0000:0000
last host2001:0db8:0000:f9ff:ffff:ffff:ffff:ffff
green = network digits, amber = digit split by the prefix
full form2001:0db8:0000:f900:0000:0000:0000:0000
reverse dns0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.9.f.0.0.0.0.8.b.d.0.1.0.0.2.ip6.arpa

/56 split into /120 · 18,446,744,073,709,551,616 subnets

close ×
#networklast address
12001:db8:0:f900::/1202001:db8:0:f900::ff
22001:db8:0:f900::100/1202001:db8:0:f900::1ff
32001:db8:0:f900::200/1202001:db8:0:f900::2ff
42001:db8:0:f900::300/1202001:db8:0:f900::3ff
52001:db8:0:f900::400/1202001:db8:0:f900::4ff
62001:db8:0:f900::500/1202001:db8:0:f900::5ff
72001:db8:0:f900::600/1202001:db8:0:f900::6ff
82001:db8:0:f900::700/1202001:db8:0:f900::7ff
92001:db8:0:f900::800/1202001:db8:0:f900::8ff
102001:db8:0:f900::900/1202001:db8:0:f900::9ff
112001:db8:0:f900::a00/1202001:db8:0:f900::aff
122001:db8:0:f900::b00/1202001:db8:0:f900::bff
132001:db8:0:f900::c00/1202001:db8:0:f900::cff
142001:db8:0:f900::d00/1202001:db8:0:f900::dff
152001:db8:0:f900::e00/1202001:db8:0:f900::eff
162001:db8:0:f900::f00/1202001:db8:0:f900::fff
172001:db8:0:f900::1000/1202001:db8:0:f900::10ff
182001:db8:0:f900::1100/1202001:db8:0:f900::11ff
192001:db8:0:f900::1200/1202001:db8:0:f900::12ff
202001:db8:0:f900::1300/1202001:db8:0:f900::13ff
212001:db8:0:f900::1400/1202001:db8:0:f900::14ff
222001:db8:0:f900::1500/1202001:db8:0:f900::15ff
232001:db8:0:f900::1600/1202001:db8:0:f900::16ff
242001:db8:0:f900::1700/1202001:db8:0:f900::17ff
252001:db8:0:f900::1800/1202001:db8:0:f900::18ff
262001:db8:0:f900::1900/1202001:db8:0:f900::19ff
272001:db8:0:f900::1a00/1202001:db8:0:f900::1aff
282001:db8:0:f900::1b00/1202001:db8:0:f900::1bff
292001:db8:0:f900::1c00/1202001:db8:0:f900::1cff
302001:db8:0:f900::1d00/1202001:db8:0:f900::1dff
312001:db8:0:f900::1e00/1202001:db8:0:f900::1eff
322001:db8:0:f900::1f00/1202001:db8:0:f900::1fff
332001:db8:0:f900::2000/1202001:db8:0:f900::20ff
342001:db8:0:f900::2100/1202001:db8:0:f900::21ff
352001:db8:0:f900::2200/1202001:db8:0:f900::22ff
362001:db8:0:f900::2300/1202001:db8:0:f900::23ff
372001:db8:0:f900::2400/1202001:db8:0:f900::24ff
382001:db8:0:f900::2500/1202001:db8:0:f900::25ff
392001:db8:0:f900::2600/1202001:db8:0:f900::26ff
402001:db8:0:f900::2700/1202001:db8:0:f900::27ff
412001:db8:0:f900::2800/1202001:db8:0:f900::28ff
422001:db8:0:f900::2900/1202001:db8:0:f900::29ff
432001:db8:0:f900::2a00/1202001:db8:0:f900::2aff
442001:db8:0:f900::2b00/1202001:db8:0:f900::2bff
452001:db8:0:f900::2c00/1202001:db8:0:f900::2cff
462001:db8:0:f900::2d00/1202001:db8:0:f900::2dff
472001:db8:0:f900::2e00/1202001:db8:0:f900::2eff
482001:db8:0:f900::2f00/1202001:db8:0:f900::2fff
492001:db8:0:f900::3000/1202001:db8:0:f900::30ff
502001:db8:0:f900::3100/1202001:db8:0:f900::31ff
512001:db8:0:f900::3200/1202001:db8:0:f900::32ff
522001:db8:0:f900::3300/1202001:db8:0:f900::33ff
532001:db8:0:f900::3400/1202001:db8:0:f900::34ff
542001:db8:0:f900::3500/1202001:db8:0:f900::35ff
552001:db8:0:f900::3600/1202001:db8:0:f900::36ff
562001:db8:0:f900::3700/1202001:db8:0:f900::37ff
572001:db8:0:f900::3800/1202001:db8:0:f900::38ff
582001:db8:0:f900::3900/1202001:db8:0:f900::39ff
592001:db8:0:f900::3a00/1202001:db8:0:f900::3aff
602001:db8:0:f900::3b00/1202001:db8:0:f900::3bff
612001:db8:0:f900::3c00/1202001:db8:0:f900::3cff
622001:db8:0:f900::3d00/1202001:db8:0:f900::3dff
632001:db8:0:f900::3e00/1202001:db8:0:f900::3eff
642001:db8:0:f900::3f00/1202001:db8:0:f900::3fff
652001:db8:0:f900::4000/1202001:db8:0:f900::40ff
662001:db8:0:f900::4100/1202001:db8:0:f900::41ff
672001:db8:0:f900::4200/1202001:db8:0:f900::42ff
682001:db8:0:f900::4300/1202001:db8:0:f900::43ff
692001:db8:0:f900::4400/1202001:db8:0:f900::44ff
702001:db8:0:f900::4500/1202001:db8:0:f900::45ff
712001:db8:0:f900::4600/1202001:db8:0:f900::46ff
722001:db8:0:f900::4700/1202001:db8:0:f900::47ff
732001:db8:0:f900::4800/1202001:db8:0:f900::48ff
742001:db8:0:f900::4900/1202001:db8:0:f900::49ff
752001:db8:0:f900::4a00/1202001:db8:0:f900::4aff
762001:db8:0:f900::4b00/1202001:db8:0:f900::4bff
772001:db8:0:f900::4c00/1202001:db8:0:f900::4cff
782001:db8:0:f900::4d00/1202001:db8:0:f900::4dff
792001:db8:0:f900::4e00/1202001:db8:0:f900::4eff
802001:db8:0:f900::4f00/1202001:db8:0:f900::4fff
812001:db8:0:f900::5000/1202001:db8:0:f900::50ff
822001:db8:0:f900::5100/1202001:db8:0:f900::51ff
832001:db8:0:f900::5200/1202001:db8:0:f900::52ff
842001:db8:0:f900::5300/1202001:db8:0:f900::53ff
852001:db8:0:f900::5400/1202001:db8:0:f900::54ff
862001:db8:0:f900::5500/1202001:db8:0:f900::55ff
872001:db8:0:f900::5600/1202001:db8:0:f900::56ff
882001:db8:0:f900::5700/1202001:db8:0:f900::57ff
892001:db8:0:f900::5800/1202001:db8:0:f900::58ff
902001:db8:0:f900::5900/1202001:db8:0:f900::59ff
912001:db8:0:f900::5a00/1202001:db8:0:f900::5aff
922001:db8:0:f900::5b00/1202001:db8:0:f900::5bff
932001:db8:0:f900::5c00/1202001:db8:0:f900::5cff
942001:db8:0:f900::5d00/1202001:db8:0:f900::5dff
952001:db8:0:f900::5e00/1202001:db8:0:f900::5eff
962001:db8:0:f900::5f00/1202001:db8:0:f900::5fff
972001:db8:0:f900::6000/1202001:db8:0:f900::60ff
982001:db8:0:f900::6100/1202001:db8:0:f900::61ff
992001:db8:0:f900::6200/1202001:db8:0:f900::62ff
1002001:db8:0:f900::6300/1202001:db8:0:f900::63ff
1012001:db8:0:f900::6400/1202001:db8:0:f900::64ff
1022001:db8:0:f900::6500/1202001:db8:0:f900::65ff
1032001:db8:0:f900::6600/1202001:db8:0:f900::66ff
1042001:db8:0:f900::6700/1202001:db8:0:f900::67ff
1052001:db8:0:f900::6800/1202001:db8:0:f900::68ff
1062001:db8:0:f900::6900/1202001:db8:0:f900::69ff
1072001:db8:0:f900::6a00/1202001:db8:0:f900::6aff
1082001:db8:0:f900::6b00/1202001:db8:0:f900::6bff
1092001:db8:0:f900::6c00/1202001:db8:0:f900::6cff
1102001:db8:0:f900::6d00/1202001:db8:0:f900::6dff
1112001:db8:0:f900::6e00/1202001:db8:0:f900::6eff
1122001:db8:0:f900::6f00/1202001:db8:0:f900::6fff
1132001:db8:0:f900::7000/1202001:db8:0:f900::70ff
1142001:db8:0:f900::7100/1202001:db8:0:f900::71ff
1152001:db8:0:f900::7200/1202001:db8:0:f900::72ff
1162001:db8:0:f900::7300/1202001:db8:0:f900::73ff
1172001:db8:0:f900::7400/1202001:db8:0:f900::74ff
1182001:db8:0:f900::7500/1202001:db8:0:f900::75ff
1192001:db8:0:f900::7600/1202001:db8:0:f900::76ff
1202001:db8:0:f900::7700/1202001:db8:0:f900::77ff
1212001:db8:0:f900::7800/1202001:db8:0:f900::78ff
1222001:db8:0:f900::7900/1202001:db8:0:f900::79ff
1232001:db8:0:f900::7a00/1202001:db8:0:f900::7aff
1242001:db8:0:f900::7b00/1202001:db8:0:f900::7bff
1252001:db8:0:f900::7c00/1202001:db8:0:f900::7cff
1262001:db8:0:f900::7d00/1202001:db8:0:f900::7dff
1272001:db8:0:f900::7e00/1202001:db8:0:f900::7eff
1282001:db8:0:f900::7f00/1202001:db8:0:f900::7fff
1292001:db8:0:f900::8000/1202001:db8:0:f900::80ff
1302001:db8:0:f900::8100/1202001:db8:0:f900::81ff
1312001:db8:0:f900::8200/1202001:db8:0:f900::82ff
1322001:db8:0:f900::8300/1202001:db8:0:f900::83ff
1332001:db8:0:f900::8400/1202001:db8:0:f900::84ff
1342001:db8:0:f900::8500/1202001:db8:0:f900::85ff
1352001:db8:0:f900::8600/1202001:db8:0:f900::86ff
1362001:db8:0:f900::8700/1202001:db8:0:f900::87ff
1372001:db8:0:f900::8800/1202001:db8:0:f900::88ff
1382001:db8:0:f900::8900/1202001:db8:0:f900::89ff
1392001:db8:0:f900::8a00/1202001:db8:0:f900::8aff
1402001:db8:0:f900::8b00/1202001:db8:0:f900::8bff
1412001:db8:0:f900::8c00/1202001:db8:0:f900::8cff
1422001:db8:0:f900::8d00/1202001:db8:0:f900::8dff
1432001:db8:0:f900::8e00/1202001:db8:0:f900::8eff
1442001:db8:0:f900::8f00/1202001:db8:0:f900::8fff
1452001:db8:0:f900::9000/1202001:db8:0:f900::90ff
1462001:db8:0:f900::9100/1202001:db8:0:f900::91ff
1472001:db8:0:f900::9200/1202001:db8:0:f900::92ff
1482001:db8:0:f900::9300/1202001:db8:0:f900::93ff
1492001:db8:0:f900::9400/1202001:db8:0:f900::94ff
1502001:db8:0:f900::9500/1202001:db8:0:f900::95ff
1512001:db8:0:f900::9600/1202001:db8:0:f900::96ff
1522001:db8:0:f900::9700/1202001:db8:0:f900::97ff
1532001:db8:0:f900::9800/1202001:db8:0:f900::98ff
1542001:db8:0:f900::9900/1202001:db8:0:f900::99ff
1552001:db8:0:f900::9a00/1202001:db8:0:f900::9aff
1562001:db8:0:f900::9b00/1202001:db8:0:f900::9bff
1572001:db8:0:f900::9c00/1202001:db8:0:f900::9cff
1582001:db8:0:f900::9d00/1202001:db8:0:f900::9dff
1592001:db8:0:f900::9e00/1202001:db8:0:f900::9eff
1602001:db8:0:f900::9f00/1202001:db8:0:f900::9fff
1612001:db8:0:f900::a000/1202001:db8:0:f900::a0ff
1622001:db8:0:f900::a100/1202001:db8:0:f900::a1ff
1632001:db8:0:f900::a200/1202001:db8:0:f900::a2ff
1642001:db8:0:f900::a300/1202001:db8:0:f900::a3ff
1652001:db8:0:f900::a400/1202001:db8:0:f900::a4ff
1662001:db8:0:f900::a500/1202001:db8:0:f900::a5ff
1672001:db8:0:f900::a600/1202001:db8:0:f900::a6ff
1682001:db8:0:f900::a700/1202001:db8:0:f900::a7ff
1692001:db8:0:f900::a800/1202001:db8:0:f900::a8ff
1702001:db8:0:f900::a900/1202001:db8:0:f900::a9ff
1712001:db8:0:f900::aa00/1202001:db8:0:f900::aaff
1722001:db8:0:f900::ab00/1202001:db8:0:f900::abff
1732001:db8:0:f900::ac00/1202001:db8:0:f900::acff
1742001:db8:0:f900::ad00/1202001:db8:0:f900::adff
1752001:db8:0:f900::ae00/1202001:db8:0:f900::aeff
1762001:db8:0:f900::af00/1202001:db8:0:f900::afff
1772001:db8:0:f900::b000/1202001:db8:0:f900::b0ff
1782001:db8:0:f900::b100/1202001:db8:0:f900::b1ff
1792001:db8:0:f900::b200/1202001:db8:0:f900::b2ff
1802001:db8:0:f900::b300/1202001:db8:0:f900::b3ff
1812001:db8:0:f900::b400/1202001:db8:0:f900::b4ff
1822001:db8:0:f900::b500/1202001:db8:0:f900::b5ff
1832001:db8:0:f900::b600/1202001:db8:0:f900::b6ff
1842001:db8:0:f900::b700/1202001:db8:0:f900::b7ff
1852001:db8:0:f900::b800/1202001:db8:0:f900::b8ff
1862001:db8:0:f900::b900/1202001:db8:0:f900::b9ff
1872001:db8:0:f900::ba00/1202001:db8:0:f900::baff
1882001:db8:0:f900::bb00/1202001:db8:0:f900::bbff
1892001:db8:0:f900::bc00/1202001:db8:0:f900::bcff
1902001:db8:0:f900::bd00/1202001:db8:0:f900::bdff
1912001:db8:0:f900::be00/1202001:db8:0:f900::beff
1922001:db8:0:f900::bf00/1202001:db8:0:f900::bfff
1932001:db8:0:f900::c000/1202001:db8:0:f900::c0ff
1942001:db8:0:f900::c100/1202001:db8:0:f900::c1ff
1952001:db8:0:f900::c200/1202001:db8:0:f900::c2ff
1962001:db8:0:f900::c300/1202001:db8:0:f900::c3ff
1972001:db8:0:f900::c400/1202001:db8:0:f900::c4ff
1982001:db8:0:f900::c500/1202001:db8:0:f900::c5ff
1992001:db8:0:f900::c600/1202001:db8:0:f900::c6ff
2002001:db8:0:f900::c700/1202001:db8:0:f900::c7ff
2012001:db8:0:f900::c800/1202001:db8:0:f900::c8ff
2022001:db8:0:f900::c900/1202001:db8:0:f900::c9ff
2032001:db8:0:f900::ca00/1202001:db8:0:f900::caff
2042001:db8:0:f900::cb00/1202001:db8:0:f900::cbff
2052001:db8:0:f900::cc00/1202001:db8:0:f900::ccff
2062001:db8:0:f900::cd00/1202001:db8:0:f900::cdff
2072001:db8:0:f900::ce00/1202001:db8:0:f900::ceff
2082001:db8:0:f900::cf00/1202001:db8:0:f900::cfff
2092001:db8:0:f900::d000/1202001:db8:0:f900::d0ff
2102001:db8:0:f900::d100/1202001:db8:0:f900::d1ff
2112001:db8:0:f900::d200/1202001:db8:0:f900::d2ff
2122001:db8:0:f900::d300/1202001:db8:0:f900::d3ff
2132001:db8:0:f900::d400/1202001:db8:0:f900::d4ff
2142001:db8:0:f900::d500/1202001:db8:0:f900::d5ff
2152001:db8:0:f900::d600/1202001:db8:0:f900::d6ff
2162001:db8:0:f900::d700/1202001:db8:0:f900::d7ff
2172001:db8:0:f900::d800/1202001:db8:0:f900::d8ff
2182001:db8:0:f900::d900/1202001:db8:0:f900::d9ff
2192001:db8:0:f900::da00/1202001:db8:0:f900::daff
2202001:db8:0:f900::db00/1202001:db8:0:f900::dbff
2212001:db8:0:f900::dc00/1202001:db8:0:f900::dcff
2222001:db8:0:f900::dd00/1202001:db8:0:f900::ddff
2232001:db8:0:f900::de00/1202001:db8:0:f900::deff
2242001:db8:0:f900::df00/1202001:db8:0:f900::dfff
2252001:db8:0:f900::e000/1202001:db8:0:f900::e0ff
2262001:db8:0:f900::e100/1202001:db8:0:f900::e1ff
2272001:db8:0:f900::e200/1202001:db8:0:f900::e2ff
2282001:db8:0:f900::e300/1202001:db8:0:f900::e3ff
2292001:db8:0:f900::e400/1202001:db8:0:f900::e4ff
2302001:db8:0:f900::e500/1202001:db8:0:f900::e5ff
2312001:db8:0:f900::e600/1202001:db8:0:f900::e6ff
2322001:db8:0:f900::e700/1202001:db8:0:f900::e7ff
2332001:db8:0:f900::e800/1202001:db8:0:f900::e8ff
2342001:db8:0:f900::e900/1202001:db8:0:f900::e9ff
2352001:db8:0:f900::ea00/1202001:db8:0:f900::eaff
2362001:db8:0:f900::eb00/1202001:db8:0:f900::ebff
2372001:db8:0:f900::ec00/1202001:db8:0:f900::ecff
2382001:db8:0:f900::ed00/1202001:db8:0:f900::edff
2392001:db8:0:f900::ee00/1202001:db8:0:f900::eeff
2402001:db8:0:f900::ef00/1202001:db8:0:f900::efff
2412001:db8:0:f900::f000/1202001:db8:0:f900::f0ff
2422001:db8:0:f900::f100/1202001:db8:0:f900::f1ff
2432001:db8:0:f900::f200/1202001:db8:0:f900::f2ff
2442001:db8:0:f900::f300/1202001:db8:0:f900::f3ff
2452001:db8:0:f900::f400/1202001:db8:0:f900::f4ff
2462001:db8:0:f900::f500/1202001:db8:0:f900::f5ff
2472001:db8:0:f900::f600/1202001:db8:0:f900::f6ff
2482001:db8:0:f900::f700/1202001:db8:0:f900::f7ff
2492001:db8:0:f900::f800/1202001:db8:0:f900::f8ff
2502001:db8:0:f900::f900/1202001:db8:0:f900::f9ff
2512001:db8:0:f900::fa00/1202001:db8:0:f900::faff
2522001:db8:0:f900::fb00/1202001:db8:0:f900::fbff
2532001:db8:0:f900::fc00/1202001:db8:0:f900::fcff
2542001:db8:0:f900::fd00/1202001:db8:0:f900::fdff
2552001:db8:0:f900::fe00/1202001:db8:0:f900::feff
2562001:db8:0:f900::ff00/1202001:db8:0:f900::ffff

showing 256 of 18,446,744,073,709,551,616

01 / table

IPv6 prefix table.

Click a prefix longer than your network to split it into subnets.

prefixaddresses/64 subnetsin your /56
/82¹²⁰2⁵⁶-
/122¹¹⁶2⁵²-
/162¹¹²2⁴⁸-
/202¹⁰⁸2⁴⁴-
/242¹⁰⁴2⁴⁰-
/282¹⁰⁰2³⁶-
/322⁹⁶4,294,967,296-
/362⁹²268,435,456-
/402⁸⁸16,777,216-
/442⁸⁴1,048,576-
/482⁸⁰65,536-
/522⁷⁶4,096-
/562⁷²2561
/602⁶⁸1616 split →
/642⁶⁴1256 split →
/722⁵⁶-65,536 split →
/802⁴⁸-16,777,216 split →
/964,294,967,296-2⁴⁰ split →
/11265,536-2⁵⁶ split →
/120256-2⁶⁴ split →
/12416-2⁶⁸ split →
/1264-2⁷⁰ split →
/1272-2⁷¹ split →
/1281-2⁷² split →
02 / faq

About this calculator.

How do I use this IPv6 calculator?

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Type an IPv6 address followed by a prefix, like 2001:db8:abcd::1/48. Without a prefix it uses /64. The address can be written in full or shortened with ::.

Why does IPv6 have no broadcast address?

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IPv6 replaced broadcast with multicast, so no address is set aside for it. That is why this calculator shows the whole range, from the network address to the last address.

What prefix do ISPs usually hand out?

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A single LAN is almost always a /64. Home customers usually get a /56 or /60, and an organization or site usually gets a /48. One /48 holds 65,536 /64 subnets.

Learn how to work it out →