sipcalc: sipcalc (advanced console based ip subnet calculator) sipcalc: sipcalc: Sipcalc is an ip subnet calculator. Sipcalc, in its simplest form sipcalc: takes an ip-address and a subnet mask on the commandline and outputs sipcalc: information about the subnet. Sipcalc has support for both IPv4 sipcalc: and IPv6 addresses. sipcalc: sipcalc: Project homepage: http://www.routemeister.net/projects/sipcalc/ sipcalc: sipcalc: sipcalc: