939 Area Code: Bayamón, Puerto Rico
Area code 939 serves Bayamón, Santurce and Carolina, Puerto Rico in the Atlantic time zone, in service since 2001. Consumers have filed 109 unwanted-call complaints against 103 different 939 numbers, 16 of them with the FTC in the last 30 days. Look up the exact number that called you below.
Area code 939 at a glance
- State
- Puerto Rico
- Main cities
- Bayamón, Santurce, Carolina, Ponce, Aguadilla, Caguas + 66 more
- Counties
- Bayamón Municipio, San Juan Municipio, Ponce Municipio, Carolina Municipio + 56 more
- Local time
- —Atlantic
- In service since
- September 15, 2001
- Overlay of
- 787
- Local dialing
- 10 digits (area code + number)
- Exchanges
- 75 rate centers, 360 prefixes
Sources: NANPA area code and central office code records (refreshed weekly); cities and counties matched from US Census Bureau and USGS place names.
Reported 939 numbers
No single 939 number has enough complaints yet for a full report page, so none are listed. Look up the exact number that called you: the lookup works on every US number, whether or not it has complaint history.
What calls from 939 numbers are about
40 FTC Do Not Call complaints about 939 numbers since Jul 24. The most common named subject is debt-relief pitches, at 15% of complaints (83% of those were recorded messages). Overall, 45% of callers who answered said the call was a robocall.
FTC complaint subjects
- Other / unspecified2255%
- Debt reduction615%
- Impostor (government, business, family)410%
- Work-from-home / make money25%
- Medical & prescriptions25%
- Dropped call / no message13%
- No subject given13%
FCC complaints by call type, last 2 years
- Text Message1777%
- Live Voice314%
- Prerecorded Voice29%
77% of recent FCC complaints about 939 numbers are about text messages, not calls.
When 939 spam calls come in
30% of complaints that give a call time describe calls between 9am and 12pm. 90% came Monday to Friday, most on Mondays, the pattern of call-center robocall campaigns that run on business hours. Times are as consumers reported them to the FTC.
By hour of the day
By day of the week
Is it getting worse?
FCC complaints about 939 numbers peaked in 2025 (14); the FTC's daily Do Not Call data has carried most of the volume since mid-2026.
FTC complaints per week
FCC complaints per year
Years shown as '15 to '26; the current year is partial.
Who gets these calls
Only 45% of the FTC complaints about 939 numbers came from Puerto Rico residents; the most came from Texas, Ohio and California. 939 numbers are being used for nationwide campaigns, so the area code says little about where the caller is.
Where complainants live
- PR1845%
- Texas410%
- Ohio38%
- California38%
- Colorado38%
Carriers operating in 939
NANPA has assigned 360 939 prefixes (NPA-NXX central-office codes) across 75 rate centers: 54% to wireless carriers, 38% to landline and VoIP operators; 97% are pooled blocks shared by several carriers. The newest assignment was 2025-10-22. The carrier holding a prefix is who the number was issued through. It says nothing about who is calling, since caller ID is routinely spoofed.
| Carrier | Type | Prefixes | Rate centers | Newest assignment |
|---|---|---|---|---|
| T-Mobile USA | Wireless | 122(34%) | 21 | 2025-10-03 |
| Puerto Rico Telco dba Claro Puerto Rico | Incumbent landline (ILEC) | 87(24%) | 1 | 2021-10-01 |
| Liberty Mobile Puerto Rico INC. | Wireless | 62(17%) | 29 | 2024-03-15 |
| Liberty Communications of Puerto Rico LLC | Competitive / VoIP (CLEC) | 27(8%) | 23 | 2024-08-27 |
| Natural G.C. INC. | Unclassified | 14(4%) | 14 | 2019-01-03 |
| Neutral Tandem | Unclassified | 14(4%) | 13 | 2020-12-16 |
| Onvoy (Sinch) | Competitive / VoIP (CLEC) | 14(4%) | 14 | 2023-11-06 |
| Metro by T-Mobile (MetroPCS) | Wireless | 7(2%) | 6 | 2025-10-22 |
| Lumen Technologies Puerto Rico, LLC | Competitive / VoIP (CLEC) | 5(1%) | 4 | 2025-02-12 |
| AT&T Mobility (New Cingular Wireless PCS) | Wireless | 2(1%) | 2 | 2022-02-23 |
| Puerto Rico Tel. CO. | Incumbent landline (ILEC) | 2(1%) | 2 | 2011-07-19 |
| Comcast (Xfinity Voice) | Competitive / VoIP (CLEC) | 1(0%) | 1 | 2023-05-03 |
Largest rate centers (exchanges) by prefixes: Bayamón North (103), Santurce (39), Carolina (16), Ponce (15), Aguadilla (12), Bayamón South (12), Caguas (9), Trujillo Alto (8), Arecibo (7), Arroyo (7). Source: NANPA Central Office Code Utilized Assignments (public, refreshed weekly).
What to do about calls from 939 numbers
Before you call back
- Debt reduction is the top named complaint here. Don't pay upfront fees for debt relief; the FTC's Telemarketing Sales Rule bans them. Talk to your lender or a nonprofit credit counselor instead. Read about debt-relief robocalls.
- Look up the full number above. A missed call from 939 with no voicemail is usually a robocall; anyone who needs you will leave a message.
- Block repeat callers: iPhone, Android, or your carrier's free filter (Verizon, AT&T, T-Mobile).
Report it in Puerto Rico
- Unwanted sales calls and robocalls: donotcall.gov (FTC). Scams and fraud: ReportFraud.ftc.gov.
- Spoofing, texts and call-blocking problems: FCC consumer complaints.
- State complaints: Puerto Rico Department of Consumer Affairs (DACO).
Your FTC and FCC reports are published (without your name or number) in the datasets this page is built from. How to report unwanted calls.
Area code 939: questions answered from the data
Where is area code 939?
Area code 939 serves Bayamón, Santurce and Carolina, Puerto Rico, covering Bayamón Municipio, San Juan Municipio and Ponce Municipio and 57 more counties. It has been in service since September 15, 2001.
What time zone is area code 939 in?
Area code 939 is in the Atlantic time zone (UTC−4 all year). The current local time is shown at the top of this page.
What are calls from 939 numbers usually about?
Since Jul 24, consumers filed 40 FTC Do Not Call complaints about 939 numbers. The most common named subject was debt-relief pitches: 15% of complaints, 83% of them recorded messages. Across all subjects, 45% of callers who answered the question said the call was a robocall.
When do 939 spam calls happen?
30% of the complaints that give a call time describe calls between 9am and 12pm, and 90% came on weekdays, most often on Monday. Times are as consumers reported them.
Are calls from 939 numbers really local?
Not necessarily. Only 45% of the FTC complaints about 939 numbers came from Puerto Rico residents; the most came from Texas, Ohio and California. 939 numbers are being used for nationwide campaigns, so the area code says little about where the caller is.
How do I report a 939 scam call in Puerto Rico?
Report unwanted sales calls and robocalls to the FTC at donotcall.gov, and scams to ReportFraud.ftc.gov. The FCC takes complaints at consumercomplaints.fcc.gov. In Puerto Rico, the Puerto Rico Department of Consumer Affairs (DACO) also handles consumer complaints about scam calls. Reports feed the public data this page is built from.
Overlay and nearby area codes
Sources: FTC Do Not Call complaints (unverified consumer reports), published every weekday and available here from Jul 24; FCC Consumer Complaint Data, public record, imported nightly; NANPA numbering records. A number appearing here means consumers reported calls that displayed it. Caller ID can be spoofed.