Hi Colin, We don't use a code for the US, they just have different areas as we do in Canada. In fact if you phone Alberta ( my Province) there is a code for the north & a separate code for the south. I had the operator come on the line & said that I could not dial that # from here, so I just gave up at that point, our operators are not the best, probably working in India or some place like that. The only nice thing here is we have NO charge for our local calls, & it costs just 3p a minute to phone most places overseas including Australia & U/K. Mick B.