Calling Code of Guam: +1671

Photo by Luke Ma / CC BY

Dialling procedure for making International Calls from Guam

(From your Home Country to Other Countries)

• To make an International call first you need to dial an International Call Prefix. It is simply 00 for many countries. But Several countries follow different International Call Prefixes.
• Dial the country calling code of the number to which you want to make the call
• For e.g., If You are dialling from Guam to USA, Dial 011, which is the International prefix for Guam, followed by country calling code of USA which is 1.
• *International prefix is also called dial out code

Dialling procedure for making International Calls to Guam

(From Other Countries to your home Countries)

• Dial the International Prefix of the country where you are currently residing
• Dial the Country Calling Code of the number to which you want to make the call
• For e.g., If You are making an International call from USA to Guam, Dial 011 first, which is the International Call Prefix for USA, followed by country calling code of Guam which is +1671.

Dialling procedure for making Toll Free Calls from Guam

• Dial the toll free code first
• Dial the number you want to call
• Note: The person who is making a toll-free call need not pay any charge for the call.However, if the toll-free call you are making is from a different country overseas call charges will apply.

Dialling procedure for making Emergency Calls from Guam

• Dial 112 or 999 from your mobile phone
• Emergency calls in mobile phones work through any of the available mobile network in your area

Dial from an office or institution

• To dial from behind a board line you should dial 0 or 9 as per the procedure for that office
• If direct dialling is disabled, you need to connect to an opeartor first
• In the above case, The operator will make the call for you after getting the phone number from you