Your IP address:
Provider:
...

For example: 3.21.104.137

/
Input
Address: 52.128.42.0
Netmask: 255.255.255.0 = 24
Inversion mask: 0.0.0.255
Binary: 00110100.10000000.00101010.00000000
Reserved: No
Result
Network: 52.128.42.0/24 (Class A)
First IP: 52.128.42.1
Last IP: 52.128.42.254
Broadcast: 52.128.42.255
Network range: 52.128.42.0 - 52.128.42.255
List of all IP addresses: 52_128_42_0-24.txt
Number of hosts: 254
Number of IP addresses: 256