Guam phone numbers

At a glance

Country code

+1

Exit code

011

Trunk prefix

1

Mobile digits

10

Fixed-line digits

10

Number portability

not listed

Carriers on record

4

How to dial a number in Guam from anywhere: the dialling helper.

Test a pattern

Tick the line types you accept, copy the combined pattern, and paste numbers to see which range each one falls in. Numbers are reduced to their national digits first (no spaces, no +1, no trunk prefix 1); nothing leaves your browser.

^(?:671(?:2\d\d|3(?:00|3[39]|4[349]|55|6[26])|4(?:00|56|7[1-9]|8[02-9])|5(?:55|6[2-5]|88)|6(?:3[2-578]|4[24-9]|5[34]|78|8[235-9])|7(?:[0479]7|2[0167]|3[45]|8[7-9])|8(?:[2-57-9]8|6[478])|9(?:2[29]|6[79]|7[1279]|8[7-9]|9[16-9]))\d{4}|671(?:2\d\d|3(?:00|3[39]|4[349]|55|6[26])|4(?:00|56|7[1-9]|8[02-9])|5(?:55|6[2-5]|88)|6(?:3[2-578]|4[24-9]|5[34]|78|8[235-9])|7(?:[0479]7|2[0167]|3[45]|8[7-9])|8(?:[2-57-9]8|6[478])|9(?:2[29]|6[79]|7[1279]|8[7-9]|9[16-9]))\d{4})$

Need another country, or the pattern as code in your language? Open the regex builder.

Walk the prefixes

Type the first digits of a number in national form, or tap them: the operators holding blocks under those digits, then the block a full prefix falls in. 18 blocks held by 4 operators are on record.

Cheat sheet

Line types and their regular expressions

Match each pattern against the national significant number: digits only, without the trunk prefix 1 and without +1. The patterns follow the national numbering plan and are anchored here.

^(?:671(?:2\d\d|3(?:00|3[39]|4[349]|55|6[26])|4(?:00|56|7[1-9]|8[02-9])|5(?:55|6[2-5]|88)|6(?:3[2-578]|4[24-9]|5[34]|78|8[235-9])|7(?:[0479]7|2[0167]|3[45]|8[7-9])|8(?:[2-57-9]8|6[478])|9(?:2[29]|6[79]|7[1279]|8[7-9]|9[16-9]))\d{4})$

^(?:671(?:2\d\d|3(?:00|3[39]|4[349]|55|6[26])|4(?:00|56|7[1-9]|8[02-9])|5(?:55|6[2-5]|88)|6(?:3[2-578]|4[24-9]|5[34]|78|8[235-9])|7(?:[0479]7|2[0167]|3[45]|8[7-9])|8(?:[2-57-9]8|6[478])|9(?:2[29]|6[79]|7[1279]|8[7-9]|9[16-9]))\d{4})$

^(?:8(?:00|33|44|55|66|77|88)[2-9]\d{6})$

^(?:900[2-9]\d{6})$

^(?:52(?:3(?:[2-46-9][02-9]\d|5(?:[02-46-9]\d|5[0-46-9]))|4(?:[2-478][02-9]\d|5(?:[034]\d|2[024-9]|5[0-46-9])|6(?:0[1-9]|[2-9]\d)|9(?:[05-9]\d|2[0-5]|49)))\d{4}|52[34][2-9]1[02-9]\d{4}|5(?:00|2[125-9]|3[23]|44|66|77|88)[2-9]\d{6})$

Carrier prefix blocks

The operator each prefix block was allocated to, in national form, from the published allocation records for +1.

Questions developers ask

How many digits does a phone number in Guam have?

Mobile numbers have 10 national digits (7 when dialled locally). Fixed line numbers have 10 national digits (7 when dialled locally). That is the national number, without the country code +1 and without the trunk prefix 1.

What is the country code for Guam?

+1. From abroad, dial your own exit code, then 1, then the national number without its trunk prefix 1. From inside Guam, the exit code for international calls is 011.

Which prefixes are mobile numbers in Guam?

None by themselves. As elsewhere in the North American Numbering Plan, mobile and fixed-line numbers in Guam share area code 671 and their central office codes, and the plan gives both the same pattern (example: (671) 300-1234).

Can a mobile number in Guam be ported to another carrier?

Not on record. The plan data this page is built from does not list mobile number portability for Guam, so the carrier a prefix was allocated to is likely, not certainly, the carrier serving the number. Only a live carrier lookup (an HLR or MNP query) confirms it.