Your IP address:
Provider:
...

For example: 3.133.144.197

/
Input
Address: 139.60.0.0
Netmask: 255.255.254.0 = 23
Inversion mask: 0.0.1.255
Binary: 10001011.00111100.00000000.00000000
Reserved: No
Result
Network: 139.60.0.0/23 (Class B)
First IP: 139.60.0.1
Last IP: 139.60.1.254
Broadcast: 139.60.1.255
Network range: 139.60.0.0 - 139.60.1.255
List of all IP addresses: 139_60_0_0-23.txt
Number of hosts: 510
Number of IP addresses: 512