Your IP address:
Provider:
...

For example: 3.142.197.198

/
Input
Address: 148.135.208.0
Netmask: 255.255.240.0 = 20
Inversion mask: 0.0.15.255
Binary: 10010100.10000111.11010000.00000000
Reserved: No
Result
Network: 148.135.208.0/20 (Class B)
First IP: 148.135.208.1
Last IP: 148.135.223.254
Broadcast: 148.135.223.255
Network range: 148.135.208.0 - 148.135.223.255
List of all IP addresses: 148_135_208_0-20.txt
Number of hosts: 4094
Number of IP addresses: 4096