classless addressing

[rookie1010]

Hi
How do i know if i am using classless addressing.
is it a simple case of looking up the subnet mask and if it is something other than 255.255.255.0 than it is classless addressing

e.g. 255.255.255.128 or
255.255.255.192

??

 

[Inaris]

First and formost!
http://www.google.com/search?hl=en&q=classless+addressing
a good explaination
http://www.inetdaemon.com/tutorials/internet/ip/classless.html