Your IP address:
Provider:
...

For example: 52.15.59.163

/
Input
Address: 66.157.0.0
Netmask: 255.255.0.0 = 16
Inversion mask: 0.0.255.255
Binary: 01000010.10011101.00000000.00000000
Reserved: No
Result
Network: 66.157.0.0/16 (Class A)
First IP: 66.157.0.1
Last IP: 66.157.255.254
Broadcast: 66.157.255.255
Network range: 66.157.0.0 - 66.157.255.255
List of all IP addresses: 66_157_0_0-16.txt
Number of hosts: 65534
Number of IP addresses: 65536