Your IP address:
Provider:
...

For example: 216.73.216.140

/
Input
Address: 212.23.203.0
Netmask: 255.255.255.0 = 24
Inversion mask: 0.0.0.255
Binary: 11010100.00010111.11001011.00000000
Reserved: No
Result
Network: 212.23.203.0/24 (Class C)
First IP: 212.23.203.1
Last IP: 212.23.203.254
Broadcast: 212.23.203.255
Network range: 212.23.203.0 - 212.23.203.255
List of all IP addresses: 212_23_203_0-24.txt
Number of hosts: 254
Number of IP addresses: 256