Area code 671
Where the 671 area code is, its overlay and how to dial a +1 671 number from anywhere.
The 671 area code is in Guam, United States ((UTC+10)). To call from abroad: +1 671 555-0123.
The 671 area code is a geographic North American Numbering Plan (NANP) code covering Guam. It has been in service since 05-Aug-1996 and sits in the (UTC+10) time zone.
How to dial a 671 number
+1 671 555-01231 671 555-0123671 555-0123Frequently asked questions
Where is the 671 area code?
The 671 area code is in Guam, United States ((UTC+10)).
Do I have to dial 10 digits for 671?
Yes — dial the area code plus the seven-digit number.
How do I call a 671 number from another country?
Dial your exit code (or +), then 1, then 671, then the number: +1 671 555-0123.
Source: NANPA numbering plan. An area code covers a region, not a precise address — a 671 number does not pinpoint a street or ZIP code.
Who issues +1 671 numbers
Phone companies hold blocks of numbers in each area code. The main holders in 671:
About 10.9% of the 128 prefixes in use belong to mobile carriers: a 671 number is often a cell phone, and it may have moved to another carrier since.
Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.
All US area codes United States +1 Map of area code 671 — cities & rate centres