Your IP address:
Provider:
...

For example: 18.188.108.54

/
Input
Address: 188.230.0.0
Netmask: 255.255.248.0 = 21
Inversion mask: 0.0.7.255
Binary: 10111100.11100110.00000000.00000000
Reserved: No
Result
Network: 188.230.0.0/21 (Class B)
First IP: 188.230.0.1
Last IP: 188.230.7.254
Broadcast: 188.230.7.255
Network range: 188.230.0.0 - 188.230.7.255
List of all IP addresses: 188_230_0_0-21.txt
Number of hosts: 2046
Number of IP addresses: 2048