Your IP address:
Provider:
...

For example: 3.144.25.74

/
Input
Address: 140.233.136.0
Netmask: 255.255.248.0 = 21
Inversion mask: 0.0.7.255
Binary: 10001100.11101001.10001000.00000000
Reserved: No
Result
Network: 140.233.136.0/21 (Class B)
First IP: 140.233.136.1
Last IP: 140.233.143.254
Broadcast: 140.233.143.255
Network range: 140.233.136.0 - 140.233.143.255
List of all IP addresses: 140_233_136_0-21.txt
Number of hosts: 2046
Number of IP addresses: 2048