Your IP address:
Provider:
...

For example: 13.58.121.131

/
Input
Address: 136.18.128.0
Netmask: 255.255.252.0 = 22
Inversion mask: 0.0.3.255
Binary: 10001000.00010010.10000000.00000000
Reserved: No
Result
Network: 136.18.128.0/22 (Class B)
First IP: 136.18.128.1
Last IP: 136.18.131.254
Broadcast: 136.18.131.255
Network range: 136.18.128.0 - 136.18.131.255
List of all IP addresses: 136_18_128_0-22.txt
Number of hosts: 1022
Number of IP addresses: 1024