Your IP address:
Provider:
...

For example: 18.218.254.122

/
Input
Address: 146.123.139.0
Netmask: 255.255.255.0 = 24
Inversion mask: 0.0.0.255
Binary: 10010010.01111011.10001011.00000000
Reserved: No
Result
Network: 146.123.139.0/24 (Class B)
First IP: 146.123.139.1
Last IP: 146.123.139.254
Broadcast: 146.123.139.255
Network range: 146.123.139.0 - 146.123.139.255
List of all IP addresses: 146_123_139_0-24.txt
Number of hosts: 254
Number of IP addresses: 256