Your IP address:
Provider:
...

For example: 3.21.231.245

/
Input
Address: 134.251.80.0
Netmask: 255.255.240.0 = 20
Inversion mask: 0.0.15.255
Binary: 10000110.11111011.01010000.00000000
Reserved: No
Result
Network: 134.251.80.0/20 (Class B)
First IP: 134.251.80.1
Last IP: 134.251.95.254
Broadcast: 134.251.95.255
Network range: 134.251.80.0 - 134.251.95.255
List of all IP addresses: 134_251_80_0-20.txt
Number of hosts: 4094
Number of IP addresses: 4096