Your IP address:
Provider:
...

For example: 3.145.175.243

/
Input
Address: 18.34.232.0
Netmask: 255.255.248.0 = 21
Inversion mask: 0.0.7.255
Binary: 00010010.00100010.11101000.00000000
Reserved: No
Result
Network: 18.34.232.0/21 (Class A)
First IP: 18.34.232.1
Last IP: 18.34.239.254
Broadcast: 18.34.239.255
Network range: 18.34.232.0 - 18.34.239.255
List of all IP addresses: 18_34_232_0-21.txt
Number of hosts: 2046
Number of IP addresses: 2048