| Country: | Guam |
| Calling Code: | +1 671 |
| = the calling code for Guam is +1 671. | |
| International Call Prefix: (dial out code) | *011 |
| National Trunk Prefix: | *1 |
| Telephone Digits: | 7 digits |
| How to call or text Guam from abroad or internationally? | To call or text Guam's telephone number from abroad you must use the plus sign (+) or exit code of the country you are dialing from. Eg: To call Guam from the U.S., just dial: Using plus sign:(+) (International Code) (Phone Number) + 1 671 xxxxxxx Using Exit Code: (Exit Code Prefix) (International Code) (Phone Number) (011)1 671- xxxxxxx |
| Timezone: | UTC+10:00 (ChST) |