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Area code
Area code 671 — Guam
Guam · in service since July 1, 1997
Area code 671 covers all of Guam. No other area code overlays it.
Local time in Guam
Spam reports from Sep 23 – Oct 22, 2026
Too few reports for a level #427 of 461
2 FTC complaints
Consumer reports, not verified by the FTC.
See the reports- Time zoneChamorro Standard Time (UTC+10)
- Local calls10 digits
- Prefixes128 assigned
- Runs out100+ years
- Unwanted call?Block & report
Spam call reports about 671 numbers
Complaints by week
Sep 11 – Oct 22, 2026Show as table
| Week starting | Complaints |
|---|---|
| Sep 7 (3 days) | 0 |
| Sep 14 | 2 |
| Sep 21 | 0 |
| Sep 28 | 0 |
| Oct 5 | 0 |
| Oct 12 | 1 |
| Oct 19 (4 days) | 1 |
Compared with all codes
- Robocalls
- 2 of 2
- Callers with the same code
- 0 of 4
- Rank by complaints
- #427of 461 · bottom tenth (fewest complaints)
- FCC complaints, Oct 2025 – Sep 2026
- 0
What the calls were about
Sep 11 – Oct 22, 2026
| Subject | Complaints | |
|---|---|---|
| Dropped call or no message | 1 | |
| Medical & prescriptions | 1 | |
| Reducing your debt (credit cards, mortgage, student loans) | 1 | |
| No subject given | 1 |
Where the people who complained live
Fewer than 5 complaints in the archive: not shown.
October 2026 (partial) report · most reported
Consumer reports, not verified by the FTC · source
Source: FTC Do Not Call complaints created Sep 11 – Oct 22, 2026. They are reported by consumers and are not verified by the FTC; caller ID can be spoofed (how we count).
Source: FCC Consumer Complaints data, unwanted calls filed Oct 1, 2025 – Sep 30, 2026, by caller ID; not verified by the FCC.
Area code 671 location and prefixes
| Exchange (NANPA) | Place | County | Prefixes |
|---|---|---|---|
| AGANA | — | — | 95 |
Source: NANPA CO codes of Oct 23, 2026; places: U.S. Census Bureau, matched by DialWhere (how).
NANPA record
- Location
- Guam
- Assigned by NANPA
- August 5, 1996
- Local dialing
- 10 digits (NANPA: 10D)
- NANPA planning letters
- PL-556, PL-544, PL-004
Source: NANPA, NPA database of Oct 24, 2026.
Is 671 running out of numbers?
Last dated forecast (October 2025, not current): 2142.
Source: NANPA NRUF forecast, April 2026 edition.
Who holds 671 prefixes
The five largest of 9 original holders
As listed by NANPA, not today’s carrier.
| Holder (as listed) | Prefixes | |
|---|---|---|
| Teleguam Holdings, LLC | 53 41% | |
| 24 19% | ||
| Pti Pacifica Inc. | 19 15% | |
| Guam Wireless Telephone Company, LLC | 14 11% | |
| Multiple Ocn Listing | 9 7% |
Source: NANPA CO codes of Oct 23, 2026.
Questions about area code 671
What area code is 671?
A Guam area code, in service since July 1, 1997.
Where is 671 area code, and what time zone is it in?
Guam; Chamorro Standard Time (UTC+10).
Why am I getting spam calls from 671?
2 FTC complaints from Sep 23 – Oct 22, 2026, most often about debt reduction (not verified by the FTC; caller ID can be spoofed).