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IPv6 Subnet Calculator
Parse an IPv6 address with an optional prefix, see its canonical form, type, embedded IPv4 and ip6.arpa reverse name, then split the prefix into smaller subnets — entirely in your browser. The URL holds only the address.
Analyze
parse · classify · reverse$
| Compressed | |
|---|---|
| Expanded | |
| Prefix | |
| Type | |
| Embedded IPv4 | |
| Network | |
| First address | |
| Last address | |
| Addresses | |
| Reverse name (ip6.arpa) | |
| Reverse zone (ip6.arpa) |
Every value is computed locally from the 128-bit address; without a prefix the network rows show the address itself, as a /128. The reverse zone appears only when a prefix is parsed.
Split into subnets
longer prefix · paged list$
Pick a prefix longer than the parsed one: the list shows each subnet's network address, 64 per page. The count is exact even when the full list cannot be enumerated.