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US area code · Puerto Rico

939 area code

Where the 939 area code is, its overlay and how to dial a +1 939 number from anywhere.

CoversPuerto RicoTime zoneAlaska (AKT)TypeOverlay
Quick answer

The 939 area code is in Puerto Rico, United States (Alaska (AKT)). To call from abroad: +1 939 555-0123. It is an overlay, so all 10 digits are dialled.

StatePuerto Rico
Time zoneAlaska (AKT)
TypeOverlay
10-digit dialingRequired
In service since31-May-2000

The 939 area code is a geographic North American Numbering Plan (NANP) code covering Puerto Rico. It has been in service since 31-May-2000 and sits in the Alaska (AKT) time zone.

Overlay 939 shares its region

Several area codes cover the same geographic area, so two neighbours can have different codes. Because of the overlay, you must dial all 10 digits (area code + number) even for local calls.

939787

How to dial a 939 number

From abroad+1 939 555-0123
Within the US / Canada1 939 555-0123
Locally (same area)939 555-0123

Other Puerto Rico area codes

787

Frequently asked questions

Where is the 939 area code?

The 939 area code is in Puerto Rico, United States (Alaska (AKT)).

Is 939 an overlay area code?

Yes. 939 overlays the same region as 787, so callers dial all 10 digits.

Do I have to dial 10 digits for 939?

Yes — dial the area code plus the seven-digit number.

How do I call a 939 number from another country?

Dial your exit code (or +), then 1, then 939, then the number: +1 939 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 939 number does not pinpoint a street or ZIP code.

Number holders in area code 939

Each prefix (the three digits after the area code) is assigned by NANPA to one telephone company. 374 prefixes are in use in 939, shared by 18 companies. The largest holders:

CompanyPrefixesShare
Suncom Dba T-Mobile USA12132%
Puerto Rico Telco Dba Claro Puerto Rico8723%
Liberty Mobile Puerto Rico Inc.6217%
Liberty Communications Of Puerto Rico LLC277%
Natural G.C. Inc.144%
Onvoy Spectrum, LLC144%

Source: NANPA central office code assignments. A number keeps its original prefix when it is ported to another carrier.

Complaints about 939 numbers

Reports to the FTC, last 30 days
16
Recorded messages or robocalls
50%
Rank among area codes
#399 of 670
Most reported subjects
Other (7)
Work from home & other ways to make money (2)
Calls pretending to be government, businesses, or family and friends (2)

Period Aug 26 – Sep 24, 2026. These are the numbers shown on the caller ID of the reported calls; many are spoofed and do not belong to the real caller.

Source: US Federal Trade Commission, Do Not Call reported calls data (daily files).

All US area codes United States +1 Map of area code 939 — cities & rate centres

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