Your IP address:
Provider:
...

For example: 18.117.196.184

/
Input
Address: 72.41.0.0
Netmask: 255.255.240.0 = 20
Inversion mask: 0.0.15.255
Binary: 01001000.00101001.00000000.00000000
Reserved: No
Result
Network: 72.41.0.0/20 (Class A)
First IP: 72.41.0.1
Last IP: 72.41.15.254
Broadcast: 72.41.15.255
Network range: 72.41.0.0 - 72.41.15.255
List of all IP addresses: 72_41_0_0-20.txt
Number of hosts: 4094
Number of IP addresses: 4096