Your IP address:
Provider:
...

For example: 18.222.120.133

/
Input
Address: 77.120.128.0
Netmask: 255.255.192.0 = 18
Inversion mask: 0.0.63.255
Binary: 01001101.01111000.10000000.00000000
Reserved: No
Result
Network: 77.120.128.0/18 (Class A)
First IP: 77.120.128.1
Last IP: 77.120.191.254
Broadcast: 77.120.191.255
Network range: 77.120.128.0 - 77.120.191.255
List of all IP addresses: 77_120_128_0-18.txt
Number of hosts: 16382
Number of IP addresses: 16384