WhereCall is here to provide you with the most information on the area code 671, located in GUAM.

NPA Information
Area Code (NPA) 671
In Jeopardy? No
Is Assigned? Yes
Assignment Date 05 Aug 1996
In Service? Yes
In Service Date 01 Jul 1997
Overlay No
Predominant Timezone(s) (UTC+10)

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