Your IP address:
Provider:
...

For example: 3.235.120.15

/
Input
Address: 75.101.128.0
Netmask: 255.255.128.0 = 17
Inversion mask: 0.0.127.255
Binary: 01001011.01100101.10000000.00000000
Reserved: No
Result
Network: 75.101.128.0/17 (Class A)
First IP: 75.101.128.1
Last IP: 75.101.255.254
Broadcast: 75.101.255.255
Network range: 75.101.128.0 - 75.101.255.255
List of all IP addresses: 75_101_128_0-17.txt
Number of hosts: 32766
Number of IP addresses: 32768