The sipcalc command is very useful for calculating an IP subnet. This command shows the amount of hosts available for a given subnet. [email protected]:/home/homer# sipcalc 192.168.100.1/24 -[ipv4 : 192.168.100.1/24] – 0   [CIDR] Host address – 192.168.100.1 Host address (decimal) – 3232261121 Host address (hex) – C0A86401 Network address – 192.168.100.0 Network mask – 255.255.255.0 …