Your IP address:
Provider:
...

For example: 216.73.216.57

/
Input
Address: 57.140.180.0
Netmask: 255.255.254.0 = 23
Inversion mask: 0.0.1.255
Binary: 00111001.10001100.10110100.00000000
Reserved: No
Result
Network: 57.140.180.0/23 (Class A)
First IP: 57.140.180.1
Last IP: 57.140.181.254
Broadcast: 57.140.181.255
Network range: 57.140.180.0 - 57.140.181.255
List of all IP addresses: 57_140_180_0-23.txt
Number of hosts: 510
Number of IP addresses: 512