Your IP address:
Provider:
...

For example: 18.221.239.148

/
Input
Address: 216.145.221.0
Netmask: 255.255.255.0 = 24
Inversion mask: 0.0.0.255
Binary: 11011000.10010001.11011101.00000000
Reserved: No
Result
Network: 216.145.221.0/24 (Class C)
First IP: 216.145.221.1
Last IP: 216.145.221.254
Broadcast: 216.145.221.255
Network range: 216.145.221.0 - 216.145.221.255
List of all IP addresses: 216_145_221_0-24.txt
Number of hosts: 254
Number of IP addresses: 256