Your IP address:
Provider:
...

For example: 216.73.216.208

/
Input
Address: 8.34.208.0
Netmask: 255.255.248.0 = 21
Inversion mask: 0.0.7.255
Binary: 00001000.00100010.11010000.00000000
Reserved: No
Result
Network: 8.34.208.0/21 (Class A)
First IP: 8.34.208.1
Last IP: 8.34.215.254
Broadcast: 8.34.215.255
Network range: 8.34.208.0 - 8.34.215.255
List of all IP addresses: 8_34_208_0-21.txt
Number of hosts: 2046
Number of IP addresses: 2048