I am not clear about what you are asking or why you are asking it. I’m assuming you are referring to bandwidth and storage space, but I could be wrong. If I am wrong then please post again and provide a very detailed description of exactly what information you are looking for.
Here at wordpress.com we do not have any bandwidth limits. In addition free WordPress.com blogs come with 3000 megabytes (~3 GBs) of space for storing uploaded files and images and we can purchase additional space. See > http://en.support.wordpress.com/space-upgrade/