I don't know exactly when, just whenever I get time I guess, and it won't take but a moment.
However, you may experience a "This site can't be reached" error. This depends on where your web browser goes to look up the web site address as the change must percolate through the entire internet, although for most people it should be within 5 minutes.
If you continue to have issues, clear your browser cache as its still probably storing the old record locally.
