International phone calls to Guam by ZSComm. For cheap calls to Guam use the Guam country codes and area codes for specific cities along with cellular and landline phones. You will find the international calling instructions as well. Once you sort the information check out the cheapest call rates to Guam and major cities, and start making your phone call to Guam today, some with free call rates from USA, from UK and from Canada as well as military bases around the world.
Guam Country code: 1671
How to call Guam from USA: Dial 011 + 1671 + phone number
How to call Guam from Canada: Dial 011 + 1671 + phone number
How to call Guam from UK: Dial 00 + 1671 + phone number