city code Guam DOES NOT USE CITY CODES.

+1-671

COUNTRY CALLING CODE

GU

2 DST ISO

GUM

3 DST ISO

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National Codes

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  • NATIONAL
    DIAL CODES
  • 中国-收费免费 (800) 低音量
    +86-800
  • 中国-收费免费 (800) 低音量
    +86-800

Guam CITY CODES

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