Your IP address:
Provider:
...

For example: 18.116.90.141

/
Input
Address: 99.87.48.0
Netmask: 255.255.240.0 = 20
Inversion mask: 0.0.15.255
Binary: 01100011.01010111.00110000.00000000
Reserved: No
Result
Network: 99.87.48.0/20 (Class A)
First IP: 99.87.48.1
Last IP: 99.87.63.254
Broadcast: 99.87.63.255
Network range: 99.87.48.0 - 99.87.63.255
List of all IP addresses: 99_87_48_0-20.txt
Number of hosts: 4094
Number of IP addresses: 4096