Your IP address:
Provider:
...

For example: 3.134.90.44

/
Input
Address: 77.122.128.0
Netmask: 255.255.240.0 = 20
Inversion mask: 0.0.15.255
Binary: 01001101.01111010.10000000.00000000
Reserved: No
Result
Network: 77.122.128.0/20 (Class A)
First IP: 77.122.128.1
Last IP: 77.122.143.254
Broadcast: 77.122.143.255
Network range: 77.122.128.0 - 77.122.143.255
List of all IP addresses: 77_122_128_0-20.txt
Number of hosts: 4094
Number of IP addresses: 4096