Your complete guide to dialling Guam from Hagåtña to anywhere in the world — verified +1-671 country code, Pacific/Guam time zone, Oceania region, ISO references, live local time and weather, plus a step-by-step walkthrough.
Calling
Guam
+1-671
Hagåtña
Weather
HD voice signal
Alpha-2
GU
Alpha-3
GUM
Guam
GU
2 Digit ISO
+1-671
Country Calling Code
GUM
3 Digit ISO
Capital
Hagåtña
Time zone
Pacific/Guam
Weather · Hagåtña
Humidity
Wind
Guam
+1-671
Capital
Hagåtña
Region
Oceania
Time zone
Pacific/Guam
Coordinates
13.44°, 144.79°
Numbering zone
Zone 1
Code length
1 digit
Several routes connect you to Guam (+1-671) landlines, calling cards and modern VoIP services. Pick the one that fits your call volume and budget.
Dial your exit code (011 (North America) or 00 (most other countries)), enter +1-671, then the local Guam number — dropping any leading 0. Guam's 1-digit country code puts it in ITU Zone 1 of the global E.164 numbering plan.
Guam is in ITU Zone 1 — one of the lowest-cost destinations for pre-paid cards globally. Factor in the Pacific/Guam time zone when planning the call.
Apps like Skype, WhatsApp and Viber, and business VoIP from TKOS are the cheapest route to Guam (+1-671) — calls to Guam (Pacific/Guam) travel across trans-Pacific or Indian Ocean fibre — a solid broadband or 4G connection keeps latency below 180 ms.
The cost of calling Guam varies depending on the method and service provider you choose. Compare landline, VoIP and calling-card routes side by side.
VoIP · overview
Cheapest route to Guam — internet-based.
Choose TKOS for business-grade calls to Guam, or consumer apps like Skype, WhatsApp or Viber for casual chats.
Sign up with an email or phone number, then verify your identity if required.
App-to-app calls are usually free; calls to mobile/landline numbers need a small balance or a subscription plan.
Enter +1-671 followed by the Guam subscriber number (drop any leading 0).
VoIP works on phones, laptops, tablets and desk phones — wherever you have internet.
If audio drops, try switching from cellular to Wi-Fi or move closer to your router.
Capital
Hagåtña
Population
168.8K
Area
549 km²
GDP (USD)
$6.10B
Currency
US Dollar (USD $)
Languages
English, Chamorro
Emergency number
911
Internet TLD
.gu
Drive side
Right-hand traffic
Latitude / Longitude
13.44°N / 144.79°E
Time zone
Pacific/Guam
ISO 3166 codes
GU · GUM
A complete international number is built from four parts. Here's the anatomy and the dialling order.
Number anatomy
Format follows ITU-T Recommendation E.164 the international public telecommunication numbering plan.
Press + on a mobile (hold the 0 key), or dial 00 from most countries / 011 from North America.
Dial +1-671. This identifies Guam on the global telephone network.
Type the first part of the local number. Drop the leading 0 if there is one.
The remaining digits route the call to the specific line in Hagåtña or elsewhere.
Need an inbound Guam number?
TKOS provisions +1-671 DIDs and termination through direct carrier interconnects.
Whether you're reaching Guam for business or family, three habits keep every conversation crystal clear and a clean route from TKOS handles the rest.
North American and Caribbean routes to Guam support G.722 wideband on most carriers — an HD-compatible headset makes the gap between good and great audio obvious.
Trans-Pacific and Indian Ocean routes to Guam run 120–180ms round-trip — wired ethernet keeps packet loss below 0.1% where Wi-Fi adds jitter spikes on these longer paths.
Schedule Guam calls during Hagåtña business hours — 09:00–17:00 Pacific/Guam — your contact will be at their desk in a quiet space rather than taking the call on the move.
Built on top of every Guam (+1-671) route quality, price, and people you can reach.
TKOS terminates Guam traffic on Zone 1 carrier interconnects. Some of the lowest round-trip latency globally, with HD voice on every call.
Guam is a Zone 1 destination — among the lowest per-minute tiers globally. Transparent per-minute rates for Guam (+1-671), no hidden fees.
Your account manager covers Pacific/Guam hours for Guam. Phone, email, and live chat — always online for Hagåtña routes, day or night.
Provider report
TKOS
Overall
A+
Score
9.6/ 10
Coverage
A+Direct routes to Guam
Reliability
A+99.99% uptime SLA
Support
A24/7 live agents
Pricing
ATransparent per-minute
Audit scope
Guam +1-671
When selecting an international calling service for Guam, four factors separate the durable providers from the noise. Look for a proven track record on each.
Guam is Zone 1 — verify direct termination, not routing through a gateway that adds unnecessary hops.
Zone 1 has ample carrier choice — accept nothing below 99.99% SLA with automatic failover on Guam routes.
Confirm coverage for Pacific/Guam hours — a Hagåtña route issue at 09:00 needs a human response, not a next-day ticket.
Guam is Zone 1 — rates should be among the lowest globally. Push back on any premium quote.
Everything a business or traveller needs to know before dialling Guam (+1-671). Can't find an answer? Our team is one click away.
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The route you pilot today is the route that carries your millionth minute to Guam (+1-671). No migration. No replatforming. No renegotiation.