Your IP address:
Provider:
...

For example: 18.221.53.5

/
Input
Address: 136.18.144.0
Netmask: 255.255.240.0 = 20
Inversion mask: 0.0.15.255
Binary: 10001000.00010010.10010000.00000000
Reserved: No
Result
Network: 136.18.144.0/20 (Class B)
First IP: 136.18.144.1
Last IP: 136.18.159.254
Broadcast: 136.18.159.255
Network range: 136.18.144.0 - 136.18.159.255
List of all IP addresses: 136_18_144_0-20.txt
Number of hosts: 4094
Number of IP addresses: 4096