We use "dub dub dub" at work, though typically not when speaking the full name of the url. That may sound weird, so here's an example exchange:

"Go to foobar.com"

"It's not working"

"Try with dub dub dub"

As an aside, it's so painful to listen to radio commercials from advertising agencies that thought it was a good idea to include "www" in the script. "Just go to double-yew double-yew double-yew..."