Your IP address:
Provider:
...

For example: 52.15.59.163

/
Input
Address: 204.17.16.0
Netmask: 255.255.240.0 = 20
Inversion mask: 0.0.15.255
Binary: 11001100.00010001.00010000.00000000
Reserved: No
Result
Network: 204.17.16.0/20 (Class C)
First IP: 204.17.16.1
Last IP: 204.17.31.254
Broadcast: 204.17.31.255
Network range: 204.17.16.0 - 204.17.31.255
List of all IP addresses: 204_17_16_0-20.txt
Number of hosts: 4094
Number of IP addresses: 4096