Your IP address:
Provider:
...

For example: 18.220.136.165

/
Input
Address: 216.219.128.0
Netmask: 255.255.128.0 = 17
Inversion mask: 0.0.127.255
Binary: 11011000.11011011.10000000.00000000
Reserved: No
Result
Network: 216.219.128.0/17 (Class C)
First IP: 216.219.128.1
Last IP: 216.219.255.254
Broadcast: 216.219.255.255
Network range: 216.219.128.0 - 216.219.255.255
List of all IP addresses: 216_219_128_0-17.txt
Number of hosts: 32766
Number of IP addresses: 32768