Your IP address:
Provider:
...

For example: 3.144.116.159

/
Input
Address: 72.13.120.0
Netmask: 255.255.255.0 = 24
Inversion mask: 0.0.0.255
Binary: 01001000.00001101.01111000.00000000
Reserved: No
Result
Network: 72.13.120.0/24 (Class A)
First IP: 72.13.120.1
Last IP: 72.13.120.254
Broadcast: 72.13.120.255
Network range: 72.13.120.0 - 72.13.120.255
List of all IP addresses: 72_13_120_0-24.txt
Number of hosts: 254
Number of IP addresses: 256