+1 671 Guam Country Code — Phone Code, Operator Prefixes & Cheap Calls
Looking for the Guam country code? The international dialing code for Guam is +1 671. Here’s how to call Guam from abroad — dialing format, mobile operators, prefixes, and the cheapest way to call any Guam number.
When calling Guam from abroad, dial your exit code (00 from Europe, 011 from US, + from mobile) + 1 671 + the local number without the leading 0.
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Example: calling a Guam mobile from the UK → . From a mobile: .
Docomo Pacific, IT&E, GTA.
Prefixes: Guam mobiles: 4XX, 6XX, 7XX, 8XX.
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