Guam phone code
Guam country code +1. Area codes for 1 places, prefixes of 4 mobile operators, number formats and how to dial.
+1
- Country code
- +1
- Exit code (to call abroad)
- 011
- Trunk prefix (domestic calls)
- 1
- Number length
- Digits after the country code: 10
- Example landline
- +1 671-300-1234
- Code shared with
- Antigua & Barbuda, Anguilla, American Samoa, Barbados, Bermuda, Bahamas, Canada, Dominica, Dominican Republic, Grenada, Jamaica, St. Kitts & Nevis, Cayman Islands, St. Lucia, Northern Mariana Islands, Montserrat, Puerto Rico, Sint Maarten, Turks & Caicos Islands, Trinidad & Tobago, United States, St. Vincent & Grenadines, British Virgin Islands, U.S. Virgin Islands
- Region
- Micronesia
How to dial
From abroad, dial +1, then the area code and number without the leading 1: +1 671-646-XXXX. In place of the +, dial the exit code of the country you are calling from: 00 in most countries, 011 from the US and Canada. On a mobile phone you can simply dial +.
Within the country the number is dialled as (671) 646-XXXX.
Calling out: dial 011, then the other country’s code and the number.
Area codes
| Code | Place |
|---|---|
| 671646 | Tamuning |
Mobile operators
| Operator | Prefixes |
|---|---|
| GTA | 671480, 671482, 671483, 671485, 671486, 671487, 671488, 671489, 671864, 671867 |
| Choice Phone | 67187, 67188, 67189, 671868 |
| i CAN_GSM | 67183, 67184, 67185 |
| PTI PACIFICA | 67174 |
The operator is the one the number range was originally assigned to. If the subscriber ported the number, the current operator may differ.
Number types
| Type | International | Domestic |
|---|---|---|
| Fixed line or mobile | +1 671-300-1234 | (671) 300-1234 |
| Toll-free | +1 800-212-3456 | (800) 212-3456 |
| Premium rate | +1 900-212-3456 | (900) 212-3456 |
| Personal number | +1 500-234-5678 | (500) 234-5678 |
Kiribati 
Marshall Islands 
Micronesia 
Nauru 
Northern Mariana Islands 
Palau