Your IP address:
Provider:
...

For example: 18.217.109.151

/
Input
Address: 69.56.0.0
Netmask: 255.255.248.0 = 21
Inversion mask: 0.0.7.255
Binary: 01000101.00111000.00000000.00000000
Reserved: No
Result
Network: 69.56.0.0/21 (Class A)
First IP: 69.56.0.1
Last IP: 69.56.7.254
Broadcast: 69.56.7.255
Network range: 69.56.0.0 - 69.56.7.255
List of all IP addresses: 69_56_0_0-21.txt
Number of hosts: 2046
Number of IP addresses: 2048