Your IP address:
Provider:
...

For example: 3.135.241.114

/
Input
Address: 3.4.10.0
Netmask: 255.255.254.0 = 23
Inversion mask: 0.0.1.255
Binary: 00000011.00000100.00001010.00000000
Reserved: No
Result
Network: 3.4.10.0/23 (Class A)
First IP: 3.4.10.1
Last IP: 3.4.11.254
Broadcast: 3.4.11.255
Network range: 3.4.10.0 - 3.4.11.255
List of all IP addresses: 3_4_10_0-23.txt
Number of hosts: 510
Number of IP addresses: 512