Your IP address:
Provider:
...

For example: 216.73.216.51

/
Input
Address: 64.28.144.0
Netmask: 255.255.254.0 = 23
Inversion mask: 0.0.1.255
Binary: 01000000.00011100.10010000.00000000
Reserved: No
Result
Network: 64.28.144.0/23 (Class A)
First IP: 64.28.144.1
Last IP: 64.28.145.254
Broadcast: 64.28.145.255
Network range: 64.28.144.0 - 64.28.145.255
List of all IP addresses: 64_28_144_0-23.txt
Number of hosts: 510
Number of IP addresses: 512