What does a Guam phone number look like?
- International format
+1 6713001234- IDD format (caller ID)
001 6713001234- Mobile example
-
16713001234(local) →+1 6713001234 - Landline example
-
16713001234(local) →+1 6713001234
Received a call or message from +1?
A call or text from +1 (or 001) originates from Guam.
If you don't know anyone in Guam, be cautious. Common patterns with unfamiliar international numbers:
- One-ring scams (Wangiri): The caller rings once and hangs up, hoping you'll call back a premium-rate number. Don't return calls to numbers you don't recognize.
- SMS phishing: Messages claiming to be from banks, delivery services, or government agencies. Legitimate organizations won't contact you from a +1 number unless you have an account in Guam.
- Spoofed numbers: The caller ID can be faked. A call showing +1 may not actually originate from Guam.
If you do know someone in Guam and want to call them back, see the dialing instructions below.
How to call Guam from abroad
- International format (recommended)
-
+1 [local number]Example:
+1 671-300-1234 - From a mobile phone
-
Press and hold 0 or tap + to get the plus sign, then dial
+1followed by the local number. - From a landline
-
Dial your country's international access code, then
1, then the local number.
| From | Dial |
|---|---|
| US/Canada | 011 1 [local number] |
| United Kingdom | 00 1 [local number] |
| Australia | 0011 1 [local number] |
| Your browser (DialHard) | +1 [local number] |
Do I need to drop the leading zero?
When calling internationally, you typically drop the national prefix (1) from local numbers.
What time zone is Guam?
Pacific/Guam
Not a good time to call
02:02 AM local time · Late night / early morning
Most people are sleeping.
Current rates to Guam
$0.06–$0.21/min
Rates vary by mobile vs landline. Billed per minute, rounded up.
Frequently asked questions
Where is the code +1 from?
+1 is the international dialing code for Guam.
Is +1 a mobile or landline code?
+1 is the country code for all of Guam — both mobile and landline numbers use this code. The digits after the country code may indicate the number type, but this varies by country.
Is a call from +1 a scam?
Not necessarily. +1 is the legitimate country code for Guam. However, scammers can spoof any country code. If you don't recognize the number or weren't expecting a call from Guam, don't call back — especially if they only rang once.
Why won't my call to Guam connect?
Common issues:
- Wrong format: Make sure you're using +1 (not 001 or just 1)
- Extra digits: Remove any trunk prefix (usually 0) from the start of the local number
- Missing digits: Ensure you have the complete local number after the country code
What does a Guam phone number look like?
A Guam number in international format starts with
+1 followed by the local number.
Example: +1 6713001234
How do I save a Guam number in my contacts?
Always save international numbers in E.164 format: +1 followed by the local number (without the leading 0 if applicable). This format works worldwide.
How do I block calls from +1?
On most smartphones, you can block individual numbers by opening your recent calls, tapping the number, and selecting "Block." To block all calls from a country code, check your carrier's international call blocking options or use a call-filtering app.