MorhafSH / Reference

IPv6 Subnet Calculator

NETWORKING TOOL

Analyze an IPv6 prefix

Enter any full or compressed IPv6 address. The calculation runs locally in your browser.

Full, compressed, or IPv4-mapped format
/
0 to 128

This free IPv6 subnet calculator accepts full, compressed, and IPv4-mapped IPv6 addresses. Calculations stay in your browser and are not uploaded.

How to use the IPv6 calculator

  1. Enter an IPv6 address, such as 2001:db8::1.
  2. Choose a CIDR prefix from /0 to /128.
  3. Select Analyze address to view the normalized address, network boundaries, capacity, type, and reverse-DNS zone.

Note: IPv6 does not use broadcast addresses. The first and final values are the mathematical boundaries of the selected prefix.