Your IP address:
Provider:
...

For example: 3.149.243.32

/
Input
Address: 77.121.252.0
Netmask: 255.255.252.0 = 22
Inversion mask: 0.0.3.255
Binary: 01001101.01111001.11111100.00000000
Reserved: No
Result
Network: 77.121.252.0/22 (Class A)
First IP: 77.121.252.1
Last IP: 77.121.255.254
Broadcast: 77.121.255.255
Network range: 77.121.252.0 - 77.121.255.255
List of all IP addresses: 77_121_252_0-22.txt
Number of hosts: 1022
Number of IP addresses: 1024