Your IP address:
Provider:
...

For example: 216.73.216.57

/
Input
Address: 18.34.238.0
Netmask: 255.255.254.0 = 23
Inversion mask: 0.0.1.255
Binary: 00010010.00100010.11101110.00000000
Reserved: No
Result
Network: 18.34.238.0/23 (Class A)
First IP: 18.34.238.1
Last IP: 18.34.239.254
Broadcast: 18.34.239.255
Network range: 18.34.238.0 - 18.34.239.255
List of all IP addresses: 18_34_238_0-23.txt
Number of hosts: 510
Number of IP addresses: 512