00 - Costa Rica exit code to dial first when calling international
1 - Guamanian country code must be dialed next
671 - Guamanian local area code. 00 +
1 + 671 +
Local Number - Overall dialing code format
World Times:
The time in Costa Rica is now 23:59:53 PM(11:59:54 PM)
The time in Guam is now 15:59:54 PM(03:59:54 PM)
How to call Guam from Costa Rica:
World Times:
Mobile Codes: