Your IP address:
Provider:
...

For example: 216.73.216.57

/
Input
Address: 66.45.78.0
Netmask: 255.255.255.0 = 24
Inversion mask: 0.0.0.255
Binary: 01000010.00101101.01001110.00000000
Reserved: No
Result
Network: 66.45.78.0/24 (Class A)
First IP: 66.45.78.1
Last IP: 66.45.78.254
Broadcast: 66.45.78.255
Network range: 66.45.78.0 - 66.45.78.255
List of all IP addresses: 66_45_78_0-24.txt
Number of hosts: 254
Number of IP addresses: 256