CiberkitIPv6 calculator
FreeCompress, expand, split a /48 into /64s and generate EUI-64 addresses.
2001:db8:abcd:12::1 is an address inside the network 2001:db8:abcd:12::/64
2001:db8:abcd:12::/64
Documentación (RFC 3849)/64Standard LAN size
Nibbles and bits
Each hex digit is 4 bits. Network part in blue; interface part in orange; purple for a digit split by the prefix.
2001
1–160db8
17–32abcd
33–480012
49–640000
65–800000
81–960000
97–1120001
113–12800100000000000010000110110111000101010111100110100000000000100100000000000000000000000000000000000000000000000000000000000000001
Hierarchy
- /32contains 4.294.967.296 (2^32) /64 networks
Provider (ISP)
- /48contains 65.536 (2^16) /64 networks
Organization / site
- /56contains 256 /64 networks
Home customer
- /64Your network
Local network (LAN)
2001:db8:abcd:12::/64
Split
A /64 is normally not split: SLAAC and other IPv6 features need exactly /64.
2 /65 subnets, of 9.223.372.036.854.775.808 (2^63) addresses each.
| No. | Subnet | Last address |
|---|---|---|
| 0 | 2001:db8:abcd:12:7fff:ffff:ffff:ffff | |
| 1 | 2001:db8:abcd:12:ffff:ffff:ffff:ffff |