Your IP address:
Provider:
...

For example: 18.117.156.113

/
Input
Address: 66.36.0.0
Netmask: 255.255.240.0 = 20
Inversion mask: 0.0.15.255
Binary: 01000010.00100100.00000000.00000000
Reserved: No
Result
Network: 66.36.0.0/20 (Class A)
First IP: 66.36.0.1
Last IP: 66.36.15.254
Broadcast: 66.36.15.255
Network range: 66.36.0.0 - 66.36.15.255
List of all IP addresses: 66_36_0_0-20.txt
Number of hosts: 4094
Number of IP addresses: 4096