Below is the dialing procedure for calling Guam from the United States. You will find information on how to make a call abroad from the United States to a Guam landline or cell phone number.
To make a direct call to Guam from the United States, you will need to follow the foreign dialing format listed below. The dialing format is the same for calling Guam via cell phone or landline from the United States.
The ISD code or Guam code is 1.
There is 1 domain code in Guam. You want to know the Guam domain code to make a foreign call to Guam from United States.
Know the time difference between Guam and United States to schedule calls in order to avoid untimely calls.
Current time in United States: Sun. December 10, 2023, 08:00 -07:00
Current time in Guam : Mon, 11 Dec, 2023, 01:00 AM +10:00