Your IP address:
Provider:
...

For example: 3.90.255.22

/
Input
Address: 16.12.128.0
Netmask: 255.255.128.0 = 17
Inversion mask: 0.0.127.255
Binary: 00010000.00001100.10000000.00000000
Reserved: No
Result
Network: 16.12.128.0/17 (Class A)
First IP: 16.12.128.1
Last IP: 16.12.255.254
Broadcast: 16.12.255.255
Network range: 16.12.128.0 - 16.12.255.255
List of all IP addresses: 16_12_128_0-17.txt
Number of hosts: 32766
Number of IP addresses: 32768