Your IP address:
Provider:
...

For example: 18.118.9.146

/
Input
Address: 99.86.58.0
Netmask: 255.255.254.0 = 23
Inversion mask: 0.0.1.255
Binary: 01100011.01010110.00111010.00000000
Reserved: No
Result
Network: 99.86.58.0/23 (Class A)
First IP: 99.86.58.1
Last IP: 99.86.59.254
Broadcast: 99.86.59.255
Network range: 99.86.58.0 - 99.86.59.255
List of all IP addresses: 99_86_58_0-23.txt
Number of hosts: 510
Number of IP addresses: 512