whatmask 192.168.64/27
------------------------------------------------ TCP/IP NETWORK INFORMATION ------------------------------------------------ IP Entered = ..................: 192.168.55.64 CIDR = ........................: /27 Netmask = .....................: 255.255.255.224 Netmask (hex) = ...............: 0xffffffe0 Wildcard Bits = ...............: 0.0.0.31 ------------------------------------------------ Network Address = .............: 192.168.55.64 Broadcast Address = ...........: 192.168.55.95 Usable IP Addresses = .........: 30 First Usable IP Address = .....: 192.168.55.65 Last Usable IP Address = ......: 192.168.55.94