Guam Country Code
The country code for Guam is +1-671. Dial it after your country’s international access prefix (for example 011 from the US), then the local number.
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Guam
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How to Call Guam
From Any Country:
+1-671 [Local Phone Number]
Example:
+1-671 471 2345 (Example: Calling Hagatna, Guam from anywhere in the world)
How do I dial mobiles vs landlines in Guam
Guam is part of the North American Numbering Plan with area code 671.
- From the U.S./Canada (and other NANP locations): dial 1 671 + 7 digits (e.g., 1-671-688-2273).
- From outside the NANP: dial your international access code → 1 671 → 7 digits (e.g., +1-671-922-4483).
- Within Guam: since Oct 24, 2021, 10-digit dialing is mandatory—always dial 671 + number for local calls (change tied to the national 988 lifeline).
Calling from Guam to non-NANP countries: use 011 + country code + number (or + on mobiles). 
Mobiles vs landlines: In the NANP, you can’t tell mobile vs. landline purely from the digits—carriers receive NXX blocks and local number portability lets numbers move between carriers. Treat all Guam numbers as +1-671-NXX-XXXX in your contacts. 
What are the emergency numbers in Guam
911 — police, fire & ambulance (E-911). Official agencies confirm 24/7 911 coverage island-wide. Save local non-emergency lines if you’ll be on-island.
What are the city and area codes in Guam
| City | Area Code | International Dialing Format |
|---|---|---|
| Hagåtña / Agana Heights / Asan-Maina / Piti / Chalan-Pago-Ordot / Mongmong-Toto-Maite | 47 | +1-671 47X XXXX |
| Agat / Santa Rita | 56 | +1-671 56X XXXX |
| Dededo | 63 | +1-671 63X XXXX |
| Tamuning | 64 | +1-671 64X XXXX |
| Yigo | 65 | +1-671 65X XXXX |
| Mangilao / Barrigada | 73 | +1-671 73X XXXX |
| Yona / Talofofo | 789 | +1-671 789 XXXX |
| Merizo / Inarajan / Umatac | 828 | +1-671 828 XXXX |
Which mobile prefixes do mobile operators use in Guam
| Mobile Operator | Dialing Prefixes |
|---|---|
| DOCOMO Pacific (NTT DOCOMO) | widely seen blocks include 688-xxxx, 969-xxxx, 989-xxxx. 969/989 are listed under DOCOMO in numbering data. Tip: visitors can call 688-CARE for help |
| GTA (TeleGuam Holdings) | numerous 48x and 64x/63x blocks (e.g., 482-489, 638-649, 653-654) are assigned to GTA in Agana rate center; support line +1-671-644-4482. Tip: NANP dialing from U.S./Canada is just 1-671-… (often billed like domestic long-distance) |
| IT&E (PTI Pacifica, Inc.) | common allocations include 922-xxxx, 967, 971–972, 977, 979, 987 (Agana rate center). Tip: LNP exists among Guam carriers—don’t assume network by prefix. |
Area Codes in Guam
What time is it in Guam right now for calling
Hagatna
Guam
Your Location
Current Location
Guam Map
Region: Oceania
What is the current Weather in Hagatna
28°C
scattered clouds
Feels like 34°C