Your IP address:
Provider:
...

For example: 3.236.145.110

/
Input
Address: 3.33.128.0
Netmask: 255.255.128.0 = 17
Inversion mask: 0.0.127.255
Binary: 00000011.00100001.10000000.00000000
Reserved: No
Result
Network: 3.33.128.0/17 (Class A)
First IP: 3.33.128.1
Last IP: 3.33.255.254
Broadcast: 3.33.255.255
Network range: 3.33.128.0 - 3.33.255.255
List of all IP addresses: 3_33_128_0-17.txt
Number of hosts: 32766
Number of IP addresses: 32768