Your IP address:
Provider:
...

For example: 3.142.199.138

/
Input
Address: 198.13.0.0
Netmask: 255.255.240.0 = 20
Inversion mask: 0.0.15.255
Binary: 11000110.00001101.00000000.00000000
Reserved: No
Result
Network: 198.13.0.0/20 (Class C)
First IP: 198.13.0.1
Last IP: 198.13.15.254
Broadcast: 198.13.15.255
Network range: 198.13.0.0 - 198.13.15.255
List of all IP addresses: 198_13_0_0-20.txt
Number of hosts: 4094
Number of IP addresses: 4096