Your IP address:
Provider:
...

For example: 216.73.216.57

/
Input
Address: 205.185.16.0
Netmask: 255.255.240.0 = 20
Inversion mask: 0.0.15.255
Binary: 11001101.10111001.00010000.00000000
Reserved: No
Result
Network: 205.185.16.0/20 (Class C)
First IP: 205.185.16.1
Last IP: 205.185.31.254
Broadcast: 205.185.31.255
Network range: 205.185.16.0 - 205.185.31.255
List of all IP addresses: 205_185_16_0-20.txt
Number of hosts: 4094
Number of IP addresses: 4096