Your IP address:
Provider:
...

For example: 3.90.35.86

/
Input
Address: 16.86.0.0
Netmask: 255.254.0.0 = 15
Inversion mask: 0.1.255.255
Binary: 00010000.01010110.00000000.00000000
Reserved: No
Result
Network: 16.86.0.0/15 (Class A)
First IP: 16.86.0.1
Last IP: 16.87.255.254
Broadcast: 16.87.255.255
Network range: 16.86.0.0 - 16.87.255.255
Number of hosts: 131070
Number of IP addresses: 131072