What is the difference between _available from_ and _available on_?

Do the following sentences have a different meaning?

> Check the information available from [URL of a web page].  
> Check the information available on [URL of a web page].

My interpretation is that they mean, respectively:

- Check the information you find in that page, and in any page with a link in that page.
- Check the information you find in that page.

Is that a correct interpretation? Is it the current meaning?