Your IP address:
Provider:
...

For example: 3.143.218.146

/
Input
Address: 159.99.80.0
Netmask: 255.255.248.0 = 21
Inversion mask: 0.0.7.255
Binary: 10011111.01100011.01010000.00000000
Reserved: No
Result
Network: 159.99.80.0/21 (Class B)
First IP: 159.99.80.1
Last IP: 159.99.87.254
Broadcast: 159.99.87.255
Network range: 159.99.80.0 - 159.99.87.255
List of all IP addresses: 159_99_80_0-21.txt
Number of hosts: 2046
Number of IP addresses: 2048