Area Code 671
Area code 671 covers Agana in Guam, in the Chamorro Time.
Area code 671 quick facts
| Location | Agana, Guam |
|---|---|
| Time zone | Chamorro Time |
| In service | 1997-07-01 |
| Carrier coverage | 95 prefixes; 37% wireless |
| Data current as of | August 2, 2026 |
Is a call from 671 a scam? Who called me from 671?
Cities in area code 671
Agana
Carriers in area code 671
Area code 671 spans 95 prefixes, about 37% wireless. Top carriers: TELEGUAM HOLDINGS, LLC, PTI PACIFICA INC., GUAM WIRELESS TELEPHONE COMPANY, LLC, PACIFIC DATA SYSTEMS - GU. Look up the carrier and line type for a 671 number.
Frequently asked questions
Where is area code 671?
Area code 671 covers Agana in Guam, in the Chamorro Time.
What cities use area code 671?
Area code 671 serves Agana in Guam.
What time zone is area code 671 in?
Area code 671 is in the Chamorro Time (Pacific/Guam).
How do you dial a 671 number?
Dial all 10 digits: 671 followed by the 7-digit local number. From abroad, dial +1 671 and the local number.
Is a call from area code 671 a scam?
A 671 number is geographically tied to Guam, but caller ID can be spoofed, so the displayed area code does not prove where a caller really is. If you did not expect the call, do not share personal information and consider looking the number up.
Is 671 a country code?
No. 671 is a US area code (a domestic 3-digit code), not a country code. The country (calling) code for the United States is +1, shared across the North American Numbering Plan. So a full 671 number written for international dialing looks like +1 671 followed by the 7-digit local number.
Sourced from the official NANPA (North American Numbering Plan Administrator) numbering database, current as of August 2, 2026. Refreshed monthly.