Your IP address:
Provider:
...

For example: 3.142.197.212

/
Input
Address: 54.240.30.0
Netmask: 255.255.254.0 = 23
Inversion mask: 0.0.1.255
Binary: 00110110.11110000.00011110.00000000
Reserved: No
Result
Network: 54.240.30.0/23 (Class A)
First IP: 54.240.30.1
Last IP: 54.240.31.254
Broadcast: 54.240.31.255
Network range: 54.240.30.0 - 54.240.31.255
List of all IP addresses: 54_240_30_0-23.txt
Number of hosts: 510
Number of IP addresses: 512