Your IP address:
Provider:
...

For example: 3.234.177.119

/
Input
Address: 65.8.21.0
Netmask: 255.255.255.0 = 24
Inversion mask: 0.0.0.255
Binary: 01000001.00001000.00010101.00000000
Reserved: No
Result
Network: 65.8.21.0/24 (Class A)
First IP: 65.8.21.1
Last IP: 65.8.21.254
Broadcast: 65.8.21.255
Network range: 65.8.21.0 - 65.8.21.255
List of all IP addresses: 65_8_21_0-24.txt
Number of hosts: 254
Number of IP addresses: 256