Your IP address:
Provider:
...

For example: 216.73.216.57

/
Input
Address: 64.145.80.0
Netmask: 255.255.248.0 = 21
Inversion mask: 0.0.7.255
Binary: 01000000.10010001.01010000.00000000
Reserved: No
Result
Network: 64.145.80.0/21 (Class A)
First IP: 64.145.80.1
Last IP: 64.145.87.254
Broadcast: 64.145.87.255
Network range: 64.145.80.0 - 64.145.87.255
List of all IP addresses: 64_145_80_0-21.txt
Number of hosts: 2046
Number of IP addresses: 2048