Where is area code 939?
NANPA assigns 939 to Puerto Rico. The source report does not provide city-level coverage for this record, so this page does not guess a particular city. Browse other codes in Puerto Rico
Verified area-code information
939 Area Code
939 is an in-service United States area code assigned to Puerto Rico. It identifies a numbering region, not a caller’s current location.
Official Numbering RegionVerified NANPA Assignment
Puerto RicoArea Code 939
Country: United States•Time Zone: Atlantic•Overlays: 787•In Service: 15-Sep-2001
- Numbering country
- United States
- Area-code type
- Geographic
- Numbering region
- Puerto Rico
- Time-zone information
- Atlantic
- In service since
- 15-Sep-2001
View the official area-code maps ↗. Maps show numbering areas, not a caller’s location.
Time zones associated with 939
NANPA lists Atlantic for this numbering area. These are numbering-region time zones, not a caller’s current location.
Atlantic time
An area code can span more than one time zone. Local daylight-saving rules may differ.
What area codes overlay 939?
The NANPA source lists 787 in the same overlay complex. An overlay can serve the same broad numbering area; individual numbers still do not prove where a person is.
How do you dial a 939 number?
Use the North American country calling code +1 followed by the three-digit area code and seven-digit local number. For example, write the pattern as +1 939 XXX XXXX. Local dialing rules and charges depend on your location and provider. Check a supported dialing format or check NANPA’s 10-digit dialing list.
Assigned prefixes in 939
NANPA’s US report listed 358 assigned prefixes on 2026-09-29. These are code assignments, not a count of active phone numbers or proof of a caller’s current carrier. Search any US area code and prefix.
Top rate-center labels by assigned prefixes
| Rate center | Assigned prefixes |
|---|---|
| BAYAMONNOR | 103 |
| SANTURCE | 39 |
| CAROLINA | 16 |
| PONCE | 15 |
| BAYAMONSUR | 12 |
Top listed companies by assigned prefixes
| Assignment company | Assigned prefixes |
|---|---|
| SUNCOM DBA T-MOBILE USA | 120 |
| PUERTO RICO TELCO DBA CLARO PUERTO RICO | 87 |
| LIBERTY MOBILE PUERTO RICO INC. | 62 |
| LIBERTY COMMUNICATIONS OF PUERTO RICO LLC | 27 |
| NATURAL G.C. INC. - PR | 14 |
939 prefix lookup
358 assigned prefixes are listed for this area code. Search NANPA’s US central-office code assignments. The listed company and rate center describe an assignment; number portability means they cannot identify the current carrier, subscriber, or caller.
The area-code file loads when you search. The three-digit prefix stays in your browser.
Check a number with area code 939
Enter the full ten-digit number to see its structure and formatting. The check stays in your browser.
Check a 939 number
Enter a 10-digit +1 North American number. We check its structure and area-code record, not the caller’s identity or whether the line is active.
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Received an unfamiliar call?
The displayed number may be spoofed. Do not rely on an area code as proof of caller identity. If the caller claims to represent a business, end the call and contact that business using a number you found independently.
Common questions about 939
What time zone is area code 939 in?
939 is assigned to Puerto Rico, and the NANPA record associates it with Atlantic time. A phone number does not reveal its owner’s current time zone. The clock above uses a representative time zone for the numbering area.
Does 939 mean the caller is in Puerto Rico?
No. An area code is an assignment, and a person can travel, move, use internet calling, or display a spoofed number.
Can this page identify who called?
No. OfficialAreaCode has no live subscriber directory or spam-report database.