Your IP address:
Provider:
...

For example: 3.133.161.153

/
Input
Address: 15.181.144.0
Netmask: 255.255.240.0 = 20
Inversion mask: 0.0.15.255
Binary: 00001111.10110101.10010000.00000000
Reserved: No
Result
Network: 15.181.144.0/20 (Class A)
First IP: 15.181.144.1
Last IP: 15.181.159.254
Broadcast: 15.181.159.255
Network range: 15.181.144.0 - 15.181.159.255
List of all IP addresses: 15_181_144_0-20.txt
Number of hosts: 4094
Number of IP addresses: 4096