Your IP address:
Provider:
...

For example: 3.144.1.100

/
Input
Address: 13.204.0.0
Netmask: 255.252.0.0 = 14
Inversion mask: 0.3.255.255
Binary: 00001101.11001100.00000000.00000000
Reserved: No
Result
Network: 13.204.0.0/14 (Class A)
First IP: 13.204.0.1
Last IP: 13.207.255.254
Broadcast: 13.207.255.255
Network range: 13.204.0.0 - 13.207.255.255
Number of hosts: 262142
Number of IP addresses: 262144