Your IP address:
Provider:
...

For example: 18.227.111.192

/
Input
Address: 143.220.138.0
Netmask: 255.255.254.0 = 23
Inversion mask: 0.0.1.255
Binary: 10001111.11011100.10001010.00000000
Reserved: No
Result
Network: 143.220.138.0/23 (Class B)
First IP: 143.220.138.1
Last IP: 143.220.139.254
Broadcast: 143.220.139.255
Network range: 143.220.138.0 - 143.220.139.255
List of all IP addresses: 143_220_138_0-23.txt
Number of hosts: 510
Number of IP addresses: 512