sipcalc 1.1.6 Command-line IP subnet calculator
Sipcalc is an advanced command-line IP subnet calculator. It can take multiple forms of input (IPv4/IPv6/interface/hostname) and output a multitude of information about a given subnet.
Retrieving of address information from interfaces.
Classfull and CIDR output.
Multiple address and netmask input and output formats (dotted quad, hex, number of bits).
Output of broadcast address, network class, Cisco wildcard, hosts/range, network range.
The ability to split a network based on a smaller netmask, now also with recursive runs on the generated subnets. (also IPv6)
Compressed and expanded input and output addresses.
Standard IPv6 network output.
v4 in v6 output.
Reverse DNS address generation.