IPv6 Subnet Calculator
Online IPv6 subnet calculator: computes expanded/compressed forms, network prefix, first and last addresses, count and type from an address and prefix length. All local.
Online IPv6 subnet calculator: enter an IPv6 address and prefix length to compute the fully expanded and compressed forms, network prefix, first and last addresses, address count and address type. Commonly used for network planning and operations troubleshooting — everything is calculated locally.