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published 2024-11-04

TIL: sipcalc

TIL of sipcalc, an older "console based ip subnet calculator with IPv4 and IPv6 support". In contrast to the better known (and maintained) ipv6calc, this one can help with splitting IPv6 ranges into subnets: sipcalc 2001:67c:2708:100::/56 -S 64.

https://github.com/sii/sipcalc

Screenshot of sipcalc splitting an IPv6 prefix

(sipcalc splitting an IPv6 prefix)