Your IP address:
Provider:
...

For example: 3.129.13.201

/
Input
Address: 139.73.216.0
Netmask: 255.255.252.0 = 22
Inversion mask: 0.0.3.255
Binary: 10001011.01001001.11011000.00000000
Reserved: No
Result
Network: 139.73.216.0/22 (Class B)
First IP: 139.73.216.1
Last IP: 139.73.219.254
Broadcast: 139.73.219.255
Network range: 139.73.216.0 - 139.73.219.255
List of all IP addresses: 139_73_216_0-22.txt
Number of hosts: 1022
Number of IP addresses: 1024