Your IP address:
Provider:
...

For example: 3.15.221.146

/
Input
Address: 54.72.0.0
Netmask: 255.255.0.0 = 16
Inversion mask: 0.0.255.255
Binary: 00110110.01001000.00000000.00000000
Reserved: No
Result
Network: 54.72.0.0/16 (Class A)
First IP: 54.72.0.1
Last IP: 54.72.255.254
Broadcast: 54.72.255.255
Network range: 54.72.0.0 - 54.72.255.255
List of all IP addresses: 54_72_0_0-16.txt
Number of hosts: 65534
Number of IP addresses: 65536