Your IP address:
Provider:
...

For example: 3.145.178.157

/
Input
Address: 3.5.0.0
Netmask: 255.255.192.0 = 18
Inversion mask: 0.0.63.255
Binary: 00000011.00000101.00000000.00000000
Reserved: No
Result
Network: 3.5.0.0/18 (Class A)
First IP: 3.5.0.1
Last IP: 3.5.63.254
Broadcast: 3.5.63.255
Network range: 3.5.0.0 - 3.5.63.255
List of all IP addresses: 3_5_0_0-18.txt
Number of hosts: 16382
Number of IP addresses: 16384