Your IP address:
Provider:
...

For example: 34.228.213.183

/
Input
Address: 52.54.0.0
Netmask: 255.254.0.0 = 15
Inversion mask: 0.1.255.255
Binary: 00110100.00110110.00000000.00000000
Reserved: No
Result
Network: 52.54.0.0/15 (Class A)
First IP: 52.54.0.1
Last IP: 52.55.255.254
Broadcast: 52.55.255.255
Network range: 52.54.0.0 - 52.55.255.255
Number of hosts: 131070
Number of IP addresses: 131072