How to Call Guam from Oman
Calling Guam from Oman: 00 1-671 [local number].
Guam Country Code: +1-671
Quick answer
To call Guam from Oman, dial 00, then 1-671, then the local number without leading zeros. Example: 00 1-671 +1 671 300 1234. Calls cost from ~$0.12 per minute with CallTuv.
Plan before you dial with the international call cost calculator and the best time to call planner. Looking for a calling card alternative instead of the dialing instructions? Compare calling card alternatives.
Dialing format
00 1-671 +1 671 300 1234
Exit code • Country code • Local number
Exit code
00
Oman's international dialing prefix
Country code
+1-671
Guam's international calling code
Local number
+1 671 300 1234
Enter the local number without the country code
Browser format
+1-671 +1 671 300 1234
Use this format inside CallTuv
Whether you’re calling family, friends, or business contacts, knowing how to call Guam correctly helps your conversation start smoothly. This guide covers the essential dialing steps, including country and area codes that are easy to miss. By the end, you’ll be ready to connect confidently with anyone in Guam - whether you’re calling Hagåtña or anywhere else.
Step-by-Step Dialing Guide
Follow these simple steps to make a call to Guam from Oman
Dial the exit code for Oman
Start by dialing 00 (or use + on mobile). This is the international dialing prefix for Oman.
Add Guam's country code
Dial the country code +1-671 for Guam.
Enter the local phone number
Dial the local phone number in Guam (typically 8-10 digits, without any leading zeros).
Complete dialing format
Full format: 00 1-671 [local number] - For example: 00 1-671 612 345 678
HOW TO CALL
International Dialing Format
CallTuv Format
No apps needed • Works in browser
See rates for Guam →Calling Guam from Oman: Calling Code, Local Time & More
Calling Code
+1-671
Cost to Call Guam
~$0.12/min
Capital of Guam
Hagåtña
Region
Oceania (Micronesia)
Currency of Guam
United States dollar ($)
Guam Time Zones
UTC+10:00
Current time
Your time
--:--
Guam
--:--
Guam is --
Exit Code in Oman
00 (dial 00 (or + from mobile))
Route Dialing Pattern
00 1-671 +1 671 300 1234
Best Calling Window (Origin Time)
03:00-12:00
