LanCalculator - IP Subnet Calculator for IPv4/IPv6 Networks - LizardSystems
GitHub - ygvn/IPv6-Subnet-Calculator-Tool-JavaFX: IPv6 Subnet Calculator / Tool application lets you plan/subnet your assigned IPv6 address for all 128 bits.
5 Free IP Subnet Calculator Software
networking - Is there a subnet calculator that computes the *complement* of a subnet? - Stack Overflow
GitHub - ygvn/IPv6-Subnet-Calculator-Tool-JavaFX: IPv6 Subnet Calculator / Tool application lets you plan/subnet your assigned IPv6 address for all 128 bits.