IPv6 Subnet Calculator
Easily calculate enterprise IPv6 network boundaries and prefixes.
Why Calculate IPv6 Subnets?
IPv6 is the future of the internet. Because IPv6 addresses are 128-bit (unlike the 32-bit IPv4), calculating their subnets manually is virtually impossible without a tool.
1
Input Prefix
Provide any valid IPv6 address along with its prefix length (like /32, /48, or /64).
2
Calculate
Our calculator determines the full 128-bit network boundary, including the network and broadcast addresses.
3
Scale
Use the results to allocate subnets correctly across your global network infrastructure without overlapping.