Your IP address:
Provider:
...

For example: 18.188.20.56

/
Input
Address: 64.7.200.0
Netmask: 255.255.248.0 = 21
Inversion mask: 0.0.7.255
Binary: 01000000.00000111.11001000.00000000
Reserved: No
Result
Network: 64.7.200.0/21 (Class A)
First IP: 64.7.200.1
Last IP: 64.7.207.254
Broadcast: 64.7.207.255
Network range: 64.7.200.0 - 64.7.207.255
List of all IP addresses: 64_7_200_0-21.txt
Number of hosts: 2046
Number of IP addresses: 2048