question about ip address

[regiemon]

i see some ip addresses that has /32, /24 at the end.
ex. 192.168.0.0/24

what does /24 mean?

thank you.

 

[Ste]

GUessing something to do with multicasting.
Been awhile since I stuided my Net+

Edit: Its subnet Mask

 

[bla!!]

It is the subnet mask.

The number stands for how many bits in the subnet mask are used for the network portion of the ip address.

The common ones are this.

/8 = 255.0.0.0
/16= 255.255.0.0
/24 = 255.255.255.0

 

[regiemon]

ah ok.thanks a lot.