Your IP address:
Provider:
...

For example: 216.73.216.4

/
Input
Address: 23.228.192.0
Netmask: 255.255.240.0 = 20
Inversion mask: 0.0.15.255
Binary: 00010111.11100100.11000000.00000000
Reserved: No
Result
Network: 23.228.192.0/20 (Class A)
First IP: 23.228.192.1
Last IP: 23.228.207.254
Broadcast: 23.228.207.255
Network range: 23.228.192.0 - 23.228.207.255
List of all IP addresses: 23_228_192_0-20.txt
Number of hosts: 4094
Number of IP addresses: 4096