Your IP address:
Provider:
...

For example: 216.73.216.57

/
Input
Address: 205.185.216.0
Netmask: 255.255.254.0 = 23
Inversion mask: 0.0.1.255
Binary: 11001101.10111001.11011000.00000000
Reserved: No
Result
Network: 205.185.216.0/23 (Class C)
First IP: 205.185.216.1
Last IP: 205.185.217.254
Broadcast: 205.185.217.255
Network range: 205.185.216.0 - 205.185.217.255
List of all IP addresses: 205_185_216_0-23.txt
Number of hosts: 510
Number of IP addresses: 512