Your IP address:
Provider:
...

For example: 3.143.218.146

/
Input
Address: 141.230.0.0
Netmask: 255.254.0.0 = 15
Inversion mask: 0.1.255.255
Binary: 10001101.11100110.00000000.00000000
Reserved: No
Result
Network: 141.230.0.0/15 (Class B)
First IP: 141.230.0.1
Last IP: 141.231.255.254
Broadcast: 141.231.255.255
Network range: 141.230.0.0 - 141.231.255.255
Number of hosts: 131070
Number of IP addresses: 131072