Country calling codes · zone 1: North America & Caribbean (NANP)
Guam Country Code
+1-671
The country code for Guam is +1-671. To call Guam from abroad, dial your international exit code, then 1-671, then the local number without its leading zero.
+1-671
International calling code
.gu
Internet domain
GU / GUM
ISO country codes
UTC+10
Time zone (Hagatna)
How to call Guam from abroad
From a mobile phone
+ 1 671 123 456 789
Works from any country: hold 0 for “+”.
From the US or Canada
011 1 671 123 456 789
011 is the North American exit code.
From the UK, EU and most countries
00 1 671 123 456 789
00 is the most common exit code.
From Australia
0011 1 671 123 456 789
Australia uses 0011 as its exit code.
Drop the leading 0 of the local number (the trunk prefix) when you dial from abroad. The example number 123 456 789 is illustrative.
Other countries using +1
American Samoa — +1-684
Anguilla — +1-264
Antigua and Barbuda — +1-268
Bahamas — +1-242
Barbados — +1-246
Bermuda — +1-441
British Virgin Islands — +1-284
Canada — +1
Cayman Islands — +1-345
Dominica — +1-767
Dominican Republic — +1-809, +1-829, +1-849
Grenada — +1-473
Jamaica — +1-876
Montserrat — +1-664
Northern Mariana Islands — +1-670
Puerto Rico — +1-787, +1-939
Saint Kitts and Nevis — +1-869
Saint Lucia — +1-758
Saint Vincent and the Grenadines — +1-784
Sint Maarten — +1-721
Trinidad and Tobago — +1-868
Turks and Caicos Islands — +1-649
United States — +1
Virgin Islands — +1-340
Frequently asked questions
What is the country code for Guam?
The international calling code for Guam is +1-671.
How do I call Guam from the United States?
Dial 011 1 671 followed by the local number (drop any leading 0). From a mobile phone you can simply dial +1-671 and the number.
How do I call Guam from the UK or Europe?
Dial 00 1 671 and the local number without its leading 0 — or +1-671 from a mobile.
Which other countries use +1-671?
American Samoa, Anguilla, Antigua and Barbuda, Bahamas, Barbados, Bermuda, British Virgin Islands, Canada, Cayman Islands, Dominica, Dominican Republic, Grenada, Jamaica, Montserrat, Northern Mariana Islands, Puerto Rico, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Sint Maarten, Trinidad and Tobago, Turks and Caicos Islands, United States and Virgin Islands share the +1 code in the North American Numbering Plan; each has its own three-digit area code.
What is the internet domain of Guam?
The country-code top-level domain is .gu.
What time is it in Guam?
Guam (Hagatna) is on UTC+10 — check the local time before you call.