The international dialing code of the country is Guam 1671.
Calls are initiated by dialing these code to call Guam from other countries.
We’ve listed all the dialing codes for Guam in table below are the dialing codes of the regions and cellular operators in Guam.
If you received an unknown incoming phone call from Guam, you can determine who called you. Using the tables below, you can find out from which region or which mobile network the call was made.
If you are in the country of Guam, then for calls to another country simply dial your prefix of international direct dialing, dial country code and national telephone number.
Use our form to find out the international direct dialing (IDD) prefix and the code destination country.