671 Area Code
Covers Hagatna and nearby communities in Guam.
(671) 555-0142Area code 671 map
Interactive coverage map for area code 671, centered on Hagatna, Guam
13.4745, 144.7504
Open in OpenStreetMapArea code 671 coverage map — centered on Hagatna. Shaded area shows the approximate reach around the primary city.
If you are trying to place Hagatna, GU on the map, area code 671 is the one that covers it. It covers communities such as Hagatna and more across Guam. The region observes local time, so a number like (671) 555-0142 is on that clock right now. Neighboring area codes include 670. It is not currently paired with an overlay code. Local calls inside the 671 area can generally be placed with ten digits, and you do not need a leading 1 for domestic calls. Scroll on for a real-time clock, an area map, the cities and counties inside 671, its related area codes, and practical advice on 671 robocalls and caller-ID spoofing.
Cities covered by 671
Nearby & overlay area codes
Overlay codes (same area)
These share 671’s geography — a number in either code can be on the same street.
671 has no overlay code right now.
Is a call from 671 a scam?
Area code 671 serves Hagatna and the surrounding area, so most calls are ordinary local and business traffic. As everywhere, spam and robocalls do use 671 numbers, frequently by spoofing a local-looking caller ID to boost pickup rates. The area code itself tells you nothing about who is really calling, so judge the call by what's said, not the number.
Red flags to watch for
- Pressure to act right now, or threats of arrest, fines, or service being cut off.
- Requests to pay with gift cards, wire transfer, crypto, or a payment app.
- Asking for passwords, one-time codes, your SSN, or full card/bank numbers.
- A robocall or recording, or a number that won’t let you call back.
When unsure, hang up and call the organization back on a number you look up yourself.
Calling a 671 number from abroad
Every 671 number is a US/Canada +1 number. From a mobile anywhere, the simplest approach is to dial it in international format:
+1 671 555-0142If your phone can’t dial the +, replace it with your country’s exit code, then 1, then the number:
- UK, Germany, France & most of Europe
00 1 671 555-0142 - Australia
0011 1 671 555-0142 - Japan
010 1 671 555-0142 - Mexico
00 1 671 555-0142
Within the US and Canada you don’t need any of this — just dial the ten digits 671 555-0142.
Reverse phone lookup
Check any US or Canada number to see whether it's a working line, which carrier it sits on, whether it's mobile, landline or VoIP, and roughly where it's registered.
Shows carrier, line type and location. Owner name isn't available here.
Results are for personal, informational use only and may not be used for employment, credit, housing or tenant-screening decisions.
Area code 671: frequently asked questions
Where is the 671 area code located?
The 671 area code is located in Guam, centered on Hagatna. Communities in the 671 area include Hagatna.
What time zone is 671 in?
Area code 671 is in the local time zone (UTC+10 (ChST)). You can see the exact current local time for Hagatna on the live clock above.
What cities use area code 671?
Cities and areas that use 671 include Hagatna. Its primary city is Hagatna, GU.
Do I need to dial 1 before 671?
You generally do not need to dial a leading 1 for domestic calls to 671. Ten-digit dialing (the 671 code plus the seven-digit number) is the safest habit.
Is 671 a toll-free or scam number?
No — 671 is a normal geographic area code for Hagatna, not a toll-free code (toll-free codes are 800, 833, 844, 855, 866, 877 and 888). A 671 number is not inherently a scam, but the code can be spoofed. See the spam-call section above for how to tell.
What are the overlay area codes for 671?
Area code 671 does not currently have an overlay code; it is not layered on top of another code in the same area.