Your IP address:
Provider:
...

For example: 216.73.216.57

/
Input
Address: 216.221.168.0
Netmask: 255.255.248.0 = 21
Inversion mask: 0.0.7.255
Binary: 11011000.11011101.10101000.00000000
Reserved: No
Result
Network: 216.221.168.0/21 (Class C)
First IP: 216.221.168.1
Last IP: 216.221.175.254
Broadcast: 216.221.175.255
Network range: 216.221.168.0 - 216.221.175.255
List of all IP addresses: 216_221_168_0-21.txt
Number of hosts: 2046
Number of IP addresses: 2048