Your IP address:
Provider:
...

For example: 3.135.190.101

/
Input
Address: 151.148.8.0
Netmask: 255.255.248.0 = 21
Inversion mask: 0.0.7.255
Binary: 10010111.10010100.00001000.00000000
Reserved: No
Result
Network: 151.148.8.0/21 (Class B)
First IP: 151.148.8.1
Last IP: 151.148.15.254
Broadcast: 151.148.15.255
Network range: 151.148.8.0 - 151.148.15.255
List of all IP addresses: 151_148_8_0-21.txt
Number of hosts: 2046
Number of IP addresses: 2048