Geographic area code
671 area code
Assigned to Guam. An area code does not identify a caller's exact city, address, or current location.
Area code facts
Approximate map
State-level orientation for Guam; the marker is not the exact 671 service boundary.
671 orientation · Guam
Load a bounded nine-tile OpenStreetMap view. No map request is made before you choose this action.
Why is the map approximate?
Telephone area codes are assigned through exchanges and overlay complexes, not as a single official street-level polygon. This map centers a known city associated with the code when available; otherwise it uses the jurisdiction center. It must not be used to locate a specific caller or phone.
Interpret the result
What 671 tells you—and what it cannot
- FACT
Numbering-plan assignment
671 is assigned to Guam under the NANP snapshot.
- CONTEXT
Overlays and time zone
No active overlay peer is listed. Time-zone labels describe the service region, not a caller's current clock.
- LIMIT
Not a reverse-phone lookup
The code alone cannot identify a subscriber, prove a caller's identity, or show where a mobile phone is now.
Source: North American Numbering Plan Administrator (NANPA) NPA report · file date 08/04/2026 · status and relief fields are descriptive, not a promise of future availability.
Look up another area code
Enter a 3-digit area code, a U.S. phone number, a supported city, or a state.
NANPA snapshot
08/04/2026