Guam is +1 671

A local writes 671 555 0123 — the dialer below turns that into what you press.

Country code
+1
Dialing out
011
Trunk prefix
none
Area codes
671

Guam sits inside the North American Numbering Plan under area code 671, so calls to and from the US mainland are domestic in form, if not always in price. From outside the plan dial +1 671. There is no trunk prefix, and 011 reaches the rest of the world.

NANP ten-digit format under area code 671; mobiles and landlines are indistinguishable by prefix.

You dial

1 6715550123

Both countries share the North American plan — no exit code, just 1 and the ten digits. From any mobile, +1 6715550123 works worldwide.

Type the number the way a local writes it — the arithmetic is derived from each country's ITU plan.

Plan facts verified against ITU-T E.164 assigned country codes · Area code 671 — Wikipedia. Prose is our own.

Plugs & voltage by Plugchord

From usKeychord— keyboard shortcuts for every app

Also on +1