Many of the API endpoints return urls, such as `/questions/{id}` (which returns urls for `question_timeline_url `, `question_comments_url`, etc).  However, the URL returned is a relative URL, like `/questions/{id}/timeline`.

However, this URL is not relative to the API url.  It's relative to a URL that we (potentially) don't know.  Theoretically we could compute the base URL by removing the "api." subdomain, but I'm hesitant to hard-code this assumption into [my framework][1].

So my question is:

Can I always assume that removing the "api." subdomain will result in the base url of the site?  I understand that this is currently true for stackoverflow.com, meta.stackoverflow.com, etc, but will this always be true for every future StackExchange site?

**edit** S.Mark has pointed out that the API subdomain can't be relied upon.  In which case:

Can we get the absolute URL instead?

  [1]: http://stackapps.com/questions/346