Your IP address:
Provider:
...

For example: 3.141.199.243

/
Input
Address: 2.57.12.0
Netmask: 255.255.255.0 = 24
Inversion mask: 0.0.0.255
Binary: 00000010.00111001.00001100.00000000
Reserved: No
Result
Network: 2.57.12.0/24 (Class A)
First IP: 2.57.12.1
Last IP: 2.57.12.254
Broadcast: 2.57.12.255
Network range: 2.57.12.0 - 2.57.12.255
List of all IP addresses: 2_57_12_0-24.txt
Number of hosts: 254
Number of IP addresses: 256