Your IP address:
Provider:
...

For example: 3.140.242.165

/
Input
Address: 13.33.128.0
Netmask: 255.255.128.0 = 17
Inversion mask: 0.0.127.255
Binary: 00001101.00100001.10000000.00000000
Reserved: No
Result
Network: 13.33.128.0/17 (Class A)
First IP: 13.33.128.1
Last IP: 13.33.255.254
Broadcast: 13.33.255.255
Network range: 13.33.128.0 - 13.33.255.255
List of all IP addresses: 13_33_128_0-17.txt
Number of hosts: 32766
Number of IP addresses: 32768