Your IP address:
Provider:
...

For example: 18.227.114.125

/
Input
Address: 136.18.56.0
Netmask: 255.255.248.0 = 21
Inversion mask: 0.0.7.255
Binary: 10001000.00010010.00111000.00000000
Reserved: No
Result
Network: 136.18.56.0/21 (Class B)
First IP: 136.18.56.1
Last IP: 136.18.63.254
Broadcast: 136.18.63.255
Network range: 136.18.56.0 - 136.18.63.255
List of all IP addresses: 136_18_56_0-21.txt
Number of hosts: 2046
Number of IP addresses: 2048