Rose: When the servers changed, the old server was redirecting to web.brainking.com which has probably been created in advance for DNS servers to be properly updated by the time of the change.
If you still haven't closed your browser since or have one of those session saving features that reopens all your tabs when you open the browser, than it's likely you never got redirected back to the standard address. Just type brainking.com at the URL text box and you're all set.

But it will work either way, as long as Fencer doesn't deactivate the web.brainking.com address