Your IP address:
Provider:
...

For example: 216.73.216.147

/
Input
Address: 66.249.84.0
Netmask: 255.255.254.0 = 23
Inversion mask: 0.0.1.255
Binary: 01000010.11111001.01010100.00000000
Reserved: No
Result
Network: 66.249.84.0/23 (Class A)
First IP: 66.249.84.1
Last IP: 66.249.85.254
Broadcast: 66.249.85.255
Network range: 66.249.84.0 - 66.249.85.255
List of all IP addresses: 66_249_84_0-23.txt
Number of hosts: 510
Number of IP addresses: 512