Phone numbers · GU
Guam phone number format
Guam numbers use the country code +1. A mobile number looks like (671) 300-1234 at home and +16713001234 in international E.164 format.
| Type | Example (national) | International | E.164 | Digits |
|---|---|---|---|---|
| Mobile | (671) 300-1234 | +1 671-300-1234 | +16713001234 | 10 |
| Landline | (671) 300-1234 | +1 671-300-1234 | +16713001234 | 10 |
| Toll-free | (800) 212-3456 | +1 800-212-3456 | +18002123456 | 10 |
| Premium-rate | (900) 212-3456 | +1 900-212-3456 | +19002123456 | 10 |
| Personal (forwarding) number | (500) 234-5678 | +1 500-234-5678 | +15002345678 | 10 |
- Country calling code
- +1
- National (trunk) prefix
- 1
- International call prefix
- 011
- Separate VoIP range
- No
- Time zones
- America/Adak, America/Anchorage, America/Anguilla, America/Antigua, America/Barbados, America/Boise, America/Cayman, America/Chicago, America/Denver, America/Dominica, America/Edmonton, America/Fort_Nelson, America/Grand_Turk, America/Grenada, America/Halifax, America/Jamaica, America/Juneau, America/Los_Angeles, America/Lower_Princes, America/Montserrat, America/Nassau, America/New_York, America/North_Dakota/Center, America/Phoenix, America/Port_of_Spain, America/Puerto_Rico, America/Regina, America/Santo_Domingo, America/St_Johns, America/St_Kitts, America/St_Lucia, America/St_Thomas, America/St_Vincent, America/Toronto, America/Tortola, America/Vancouver, America/Winnipeg, Atlantic/Bermuda, Pacific/Guam, Pacific/Honolulu, Pacific/Pago_Pago, Pacific/Saipan
Validate in code
Check a Guam number.
Send the number as typed plus country: "GU". You get it back in E.164 with its line type, ready to store.
curl https://veqen-app.com/v1/phone/check \
-H "Authorization: Bearer $VEQEN_API_KEY" \
-H "Content-Type: application/json" \
-d '{"country": "GU", "phone": "(671) 300-1234"}'import os, requests
r = requests.post(
"https://veqen-app.com/v1/phone/check",
headers={"Authorization": f"Bearer {os.environ['VEQEN_API_KEY']}"},
json={"country": "GU", "phone": "(671) 300-1234"},
timeout=10,
)
result = r.json()
print(result["risk"]["verdict"], result["risk"]["reasons"])const res = await fetch("https://veqen-app.com/v1/phone/check", {
method: "POST",
headers: {
Authorization: `Bearer ${process.env.VEQEN_API_KEY}`,
"Content-Type": "application/json",
},
body: JSON.stringify({"country": "GU", "phone": "(671) 300-1234"}),
});
const result = await res.json();
console.log(result.risk.verdict, result.risk.reasons);Questions
Guam numbers
What is the country code for Guam?
+1. Dial it after your international access code, or use +1 from a mobile phone.
How do I format a Guam phone number in E.164?
Drop the national prefix (1) and add +1. For example (671) 300-1234 becomes +16713001234.
How many digits is a Guam mobile number?
10 digits after the country code.
Does Guam have VoIP phone numbers?
There is no separate VoIP range in the numbering plan, so VoIP numbers look like ordinary numbers.