Your IP address:
Provider:
...

For example: 3.227.239.9

/
Input
Address: 13.33.128.0
Netmask: 255.255.240.0 = 20
Inversion mask: 0.0.15.255
Binary: 00001101.00100001.10000000.00000000
Reserved: No
Result
Network: 13.33.128.0/20 (Class A)
First IP: 13.33.128.1
Last IP: 13.33.143.254
Broadcast: 13.33.143.255
Network range: 13.33.128.0 - 13.33.143.255
List of all IP addresses: 13_33_128_0-20.txt
Number of hosts: 4094
Number of IP addresses: 4096