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.