Your IP address:
Provider:
...

For example: 3.17.150.163

/
Input
Address: 23.249.216.0
Netmask: 255.255.254.0 = 23
Inversion mask: 0.0.1.255
Binary: 00010111.11111001.11011000.00000000
Reserved: No
Result
Network: 23.249.216.0/23 (Class A)
First IP: 23.249.216.1
Last IP: 23.249.217.254
Broadcast: 23.249.217.255
Network range: 23.249.216.0 - 23.249.217.255
List of all IP addresses: 23_249_216_0-23.txt
Number of hosts: 510
Number of IP addresses: 512