Your IP address:
Provider:
...

For example: 54.211.203.45

/
Input
Address: 13.35.120.0
Netmask: 255.255.248.0 = 21
Inversion mask: 0.0.7.255
Binary: 00001101.00100011.01111000.00000000
Reserved: No
Result
Network: 13.35.120.0/21 (Class A)
First IP: 13.35.120.1
Last IP: 13.35.127.254
Broadcast: 13.35.127.255
Network range: 13.35.120.0 - 13.35.127.255
List of all IP addresses: 13_35_120_0-21.txt
Number of hosts: 2046
Number of IP addresses: 2048