Dialing telephone calls from Japan to Guam
001
▶ 1
▶ 671
▶ XXX-XXXX
Step-by-step
001
▼ This IDD (International Direct Dial) prefix tells the phone system in Japan that you are dialing an international number.
1
▼ Region code that includes Guam.
671
▼ Area code for Guam.
XXX-XXXX
All local telephone numbers in Guam are 7 digits long.
Notes
Not sure what time it is on the other end of the line? Look here for Guam time, date, and time zone information.
If you are calling from a hotel or office phone system, additional steps may be required.