IPv6 Subnet Calculator

Divide an IPv6 prefix into equal subnets and see the first and last address of each.

Common IPv6 prefix sizes

Prefix	Typically used for
`/32`	Typically allocated by an internet registry to Local Internet Registry (LIR)
`/48`	Typically assigned to a single organisation, enterprise network or end site

Do not subnet beyond a /64 on segments that use Stateless Address Autoconfiguration (SLAAC) — it requires 64 host bits.

IRINN issues IPv6 prefixes to affiliates at a fraction of the equivalent IPv4 cost, and NIXI Academy runs training on deployment.

Why IPv6 Fee calculator