Your IP address:
Provider:
...

For example: 3.144.25.74

/
Input
Address: 192.157.64.0
Netmask: 255.255.248.0 = 21
Inversion mask: 0.0.7.255
Binary: 11000000.10011101.01000000.00000000
Reserved: No
Result
Network: 192.157.64.0/21 (Class C)
First IP: 192.157.64.1
Last IP: 192.157.71.254
Broadcast: 192.157.71.255
Network range: 192.157.64.0 - 192.157.71.255
List of all IP addresses: 192_157_64_0-21.txt
Number of hosts: 2046
Number of IP addresses: 2048