Oceania · Country code
Guam Country Code +1
+1 is the international calling code for Guam, shared with 24 other countries and territories. Most phone numbers there have 10 digits, written (671) 300-1234 inside Guam and +1 671 300 1234 from abroad. Below: how to dial it, its area codes, networks and time zones.
Phone numbers in Guam at a glance
- Country calling code
- +1
- International dialing prefix
- 011 (or +)
- Trunk prefix (calls inside the country)
- 1
- Number length
- 10 digits
- Example mobile, from abroad
- +1 671 300 1234
- Same number, inside the country
- (671) 300-1234
- Time zone
- Chamorro Standard Time (Pacific/Guam)
- Capital
- Hagåtña
- Languages
- English, Chamorro and Spanish
- Currency
- USD
- ISO country code
- GU
How to call Guam
From another country
- Dial your country's exit code, or press + on a mobile.
- Dial the country code 1.
- Dial the number.
+1 671 300 1234
From inside Guam
Dial the number as it is written, starting with the long-distance prefix 1. The country code is not needed.
(671) 300-1234
To call out of Guam, start with 011 (or +).
Types of phone number in Guam
The numbering plan reserves ranges for landline or mobile, toll-free, premium rate and personal number numbers. Mobile numbers have 10 digits. What each line type means.
Area codes in Guam
The one area code of Guam, and how to dial it.
| Dial inside | From abroad | Place |
|---|---|---|
| 1 671 | +1 671 | Guam |
Networks with number ranges in Guam
These networks were first allocated number ranges in Guam, the ones with the most ranges first. Numbers can be moved between networks, so a number may no longer be with the network it started on.
- GTA
- Choice Phone
- i CAN_GSM
- PTI PACIFICA
Look up a phone number from Guam
Enter any number with +1, or just its digits: it shows the line type, place, network, time zone and every format. Free and private.
Phone numbers in Guam: frequently asked questions
What is the country code for Guam?
The country calling code for Guam is +1. Put it in front of the number when you call Guam from another country. +1 is shared by 25 countries and territories, including Canada and the United States, so the digits after it tell them apart.
How do I call Guam from abroad?
Dial your country's international access code (or press + on a mobile phone), then 1, then the number. For example, (671) 300-1234 inside Guam is dialled as +1 671 300 1234 from abroad.
Do I dial 1 before a phone number in Guam?
Yes, for calls inside the +1 countries: dial 1, then the ten-digit number. From another country you dial the access code (or +), then 1 once, then the ten digits: +1 671 300 1234.
How many digits does a phone number in Guam have?
Most phone numbers in Guam have 10 digits after the country code.
What is the international dialing prefix in Guam?
To call another country from Guam, dial 011, then the country code you are calling, then the number. On a mobile phone you can press + instead of 011.
What are the area codes in Guam?
Guam has one area code. It is dialled 1 671 inside the country and +1 671 from abroad, and covers Guam.
Which mobile networks have phone numbers in Guam?
Number ranges in Guam were first allocated to networks including GTA, Choice Phone, i CAN_GSM and PTI PACIFICA. People can move their number to another network, so the one a number started on may not be the one it uses today.
What time zone is Guam in?
Guam is on Chamorro Standard Time. A phone number carries no time information, so check the time there before you call.
Can I look up a phone number from Guam?
Yes. Enter any number with +1, or choose Guam as the country, in the free phone number lookup. It shows the line type (mobile, landline, VoIP, toll-free), the place and network it was issued to, its time zone and every format of the number.