Your IP address:
Provider:
...

For example: 216.73.216.4

/
Input
Address: 155.121.0.0
Netmask: 255.255.255.0 = 24
Inversion mask: 0.0.0.255
Binary: 10011011.01111001.00000000.00000000
Reserved: No
Result
Network: 155.121.0.0/24 (Class B)
First IP: 155.121.0.1
Last IP: 155.121.0.254
Broadcast: 155.121.0.255
Network range: 155.121.0.0 - 155.121.0.255
List of all IP addresses: 155_121_0_0-24.txt
Number of hosts: 254
Number of IP addresses: 256