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IPv4/IPv6 CIDR calculator
A basic but rare IPv4 and IPv6 compatible CIDR calculator.
Support calculating CIDR for IPv4-to-IPv6 mapped addresses, IPv4 and IPv6.
{"u":"https://insidesupport.org/Tools/ipv4_ipv6_cidr_calculator","t":"IPv4/IPv6 CIDR calculator"}
Enter as
i
p/cidr