🇬🇺 671 area code
Area code 671 covers Tamuning and the surrounding area in Guam. Enter a 671 number below for a free check before you call back.
- Location: Tamuning, Guam
- Time zone: Chamorro (UTC+10) (UTC+10)
- In service since July 1, 1997
Consultar un número
Validez, operador, tipo de línea y región en la primera pasada.
Area code 671 at a glance
- Area code
- 671
- Location
- Guam, United States
- Main cities
- Tamuning
- Time zone
- Chamorro (UTC+10) (UTC+10)
- Local time now
- —
- In service since
- July 1, 1997
- Local calls
- Dial 10 digits
- Number format
- (671) 555-0123
- From abroad
- +1 671 555 0123
Cities in area code 671
- Tamuning
Is a 671 call a scam?
An area code tells you where a number was first assigned, not where the caller is. Mobile numbers keep their area code when people move, and internet (VoIP) numbers can be picked in any area code — so a 671 number can be calling from anywhere.
Robocallers exploit that with "neighbor spoofing": showing a 671 number to people in Guam because a local-looking call is more likely to be answered. If a 671 call claims to be your bank, the IRS or a delivery company, hang up and call the official number yourself.
About area code 671
671 entered service on July 1, 1997.
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Area code 671 questions
Sources: NANPA NPA database (11/04/2026) and Google libphonenumber. Area codes show where a number was assigned, not where its owner is today.
Where is area code 671?
Area code 671 is in Guam, United States. It covers Tamuning.
What time zone is area code 671?
671 is in the Chamorro (UTC+10) (UTC+10) time zone, and does not observe daylight saving time.
When did area code 671 start?
671 entered service on July 1, 1997.
How do I find out who called me from 671?
Enter the full number in the lookup at the top of this page. The free check confirms whether the number is valid and shows its carrier, line type and region; a full report adds owner and public-web records where they are available.
Why am I getting calls from area code 671?
If you live in or near Guam, they may be genuinely local — or robocalls spoofing a local-looking number. Unknown 671 callers who will not leave a message are best looked up before you call back.
Got a call from 671?
Run the free check first — validity, carrier, line type and region — and unlock the full report only if you need it.