Your IP address:
Provider:
...

For example: 216.73.216.4

/
Input
Address: 54.25.56.0
Netmask: 255.255.248.0 = 21
Inversion mask: 0.0.7.255
Binary: 00110110.00011001.00111000.00000000
Reserved: No
Result
Network: 54.25.56.0/21 (Class A)
First IP: 54.25.56.1
Last IP: 54.25.63.254
Broadcast: 54.25.63.255
Network range: 54.25.56.0 - 54.25.63.255
List of all IP addresses: 54_25_56_0-21.txt
Number of hosts: 2046
Number of IP addresses: 2048