Your IP address:
Provider:
...

For example: 18.221.85.100

/
Input
Address: 66.219.64.0
Netmask: 255.255.224.0 = 19
Inversion mask: 0.0.31.255
Binary: 01000010.11011011.01000000.00000000
Reserved: No
Result
Network: 66.219.64.0/19 (Class A)
First IP: 66.219.64.1
Last IP: 66.219.95.254
Broadcast: 66.219.95.255
Network range: 66.219.64.0 - 66.219.95.255
List of all IP addresses: 66_219_64_0-19.txt
Number of hosts: 8190
Number of IP addresses: 8192