671 area code — Agana, GU geographic
- State
- Guam
- Major area
- Agana
- Time zone
- Chamorro
- In service since
- 1997-07-01
- Active prefixes
- 95
- Rate centers
- 1
- Carriers
- 8
671 is the area code for Agana, Guam, in service since July 1, 1997, Chamorro time. Keep in mind the code identifies where the number was registered; the person calling may be elsewhere.
The code currently holds 95 working prefixes, held by 8 different carriers. Numbers are anchored to a single rate center.
If a 671 call asks for money or personal data, treat the displayed number as unverified: hang up and reach the organization through its published number. Numbering data locates numbers, not callers.
Among Guam codes, 671 stands out as the only area code serving Guam.
Local calls inside 671 are dialed 10D; 1+10 digit permissible at service provider discretion..
Largest localities in 671
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Agana | 95 | — |
FAQ
Where is a 671 number from?
671 is assigned to Agana and surrounding areas of Guam in the Chamorro time zone. The three digits after the area code (the prefix) narrow it down to a rate center.
Is 671 a toll-free number?
No. 671 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Why am I getting spam calls from 671 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 671 number does not prove the call originated there — see our guide to spotting spoofed calls.