Your IP address:
Provider:
...

For example: 44.200.145.114

/
Input
Address: 199.65.18.0
Netmask: 255.255.254.0 = 23
Inversion mask: 0.0.1.255
Binary: 11000111.01000001.00010010.00000000
Reserved: No
Result
Network: 199.65.18.0/23 (Class C)
First IP: 199.65.18.1
Last IP: 199.65.19.254
Broadcast: 199.65.19.255
Network range: 199.65.18.0 - 199.65.19.255
List of all IP addresses: 199_65_18_0-23.txt
Number of hosts: 510
Number of IP addresses: 512