Your IP address:
Provider:
...

For example: 216.73.216.57

/
Input
Address: 99.84.0.0
Netmask: 255.255.240.0 = 20
Inversion mask: 0.0.15.255
Binary: 01100011.01010100.00000000.00000000
Reserved: No
Result
Network: 99.84.0.0/20 (Class A)
First IP: 99.84.0.1
Last IP: 99.84.15.254
Broadcast: 99.84.15.255
Network range: 99.84.0.0 - 99.84.15.255
List of all IP addresses: 99_84_0_0-20.txt
Number of hosts: 4094
Number of IP addresses: 4096