Who called you?
(909) 377-4238
(909) 377-4238 is a wireless (mobile) number from Upland, CA on a prefix assigned to AT&T Mobility (New Cingular Wireless PCS). Consumers have filed 15 complaints about it: 15 with the FTC's Do Not Call Registry, most recently on 2026-10-13.
Reported this month — 9 FTC complaints in the last 30 days, most recently 2 days ago, for impostor robocalls.
Who called me from (909) 377-4238?
Carrier & location
- Type
- Wireless (mobile)
- Assigned carrier
- AT&T Mobility (New Cingular Wireless PCS)
- Rate center
- Upland, CA
- Prefix 909-377
- assigned 2015-12-03, pooled block
- Area code
- 909 — California
- 909 covers
- Ontario, San Bernardino and Fontana
- Local time there
- —Pacific
This prefix is assigned to a wireless carrier, so the number is a mobile line. Caller ID for mobile numbers is frequently spoofed by robocallers. Carrier assignment shows who the prefix was allocated to; numbers can be ported, and caller ID can be spoofed.
Complaint history
- FTC Do Not Call reports
- 152026-08-09 → 2026-10-13
- Community reports
- 0
FTC Do Not Call complaints (unverified consumer reports). Complaints run from 2026-08-09 to 2026-10-13.
Did this number call you? What was it?
What (909) 377-4238 was reported for
15 consumers reported this number to the FTC's National Do Not Call Registry between 2026-08-09 and 2026-10-13. Source: FTC Do Not Call complaints (unverified consumer reports).
Reported this month — 9 FTC complaints in the last 30 days, most recently 2 days ago, for impostor robocalls.
FTC Do Not Call reports per month. Peak month: 2026-08 (6).
Reported for
The subject each consumer chose when filing. “Impostor” means the caller claimed to be a government agency, a business, or a relative.
- Other / unspecified14 (93%)
- Impostor (government, business, family)1 (7%)
9 of 15 consumers who answered the question said the call was a recorded message or robocall. Prerecorded sales calls to a cell phone require prior express written consent under the TCPA.
When the calls came in
Consumers put 73% of the reported calls in the noon – 5 pm window, and 73% on weekdays. The FTC's Telemarketing Sales Rule bars sales calls before 8 am or after 9 pm in the consumer's local time.
Recent FTC reports naming (909) 377-4238
The most recent Do Not Call complaints, as filed: the date the consumer reported it, when they said the call happened, what it was about, and the city and state they filed from.
| Reported | Call time | Subject | Robocall | From |
|---|---|---|---|---|
| 2026-10-13 | 2026-10-10 15:52 | Impostor (government, business, family) | Yes | Phoenix, AZ |
| 2026-10-08 | 2026-10-08 12:40 | Other / unspecified | Yes | CA |
| 2026-10-08 | 2026-10-08 09:45 | Other / unspecified | No | Mesa, AZ |
| 2026-10-07 | 2026-10-07 16:31 | Other / unspecified | Yes | Modesto, CA |
| 2026-10-07 | 2026-10-07 17:34 | Other / unspecified | Yes | Sacramento, CA |
| 2026-09-27 | 2026-09-27 15:30 | Other / unspecified | Yes | Sacramento, CA |
| 2026-09-21 | 2026-09-18 13:37 | Other / unspecified | No | Fontana, CA |
| 2026-09-18 | 2026-09-18 11:13 | Other / unspecified | No | Fontana, CA |
| 2026-09-15 | 2026-09-15 12:07 | Other / unspecified | No | NV |
| 2026-08-12 | 2026-08-12 16:05 | Other / unspecified | Yes | Mesa, AZ |
| 2026-08-12 | 2026-08-12 13:02 | Other / unspecified | Yes | Phoenix, AZ |
| 2026-08-11 | 2026-08-10 11:22 | Other / unspecified | No | CA |
Source: FTC Do Not Call Reported Calls data, published every weekday. These are unverified consumer reports — they record what someone said about a call, not a finding against the number's owner. Caller ID is routinely spoofed, so a report can describe a call that only displayed this number. No reporter is identified beyond city and state.
Is (909) 377-4238 a scam? Community reports
No community reports for (909) 377-4238 yet. If this number called you, you're likely the first — leave a report below and help the next person who searches it.
What to do next
Block it on Android or iPhone, turn on your carrier's free filtering, and report the call to the FCC and FTC — those complaints are the public record this page is built from.
Related
FAQs about (909) 377-4238
Who called me from (909) 377-4238?
(909) 377-4238 is a wireless (mobile) number on a prefix assigned to AT&T Mobility (New Cingular Wireless PCS), based in Upland, CA. Consumers have filed 15 complaints about it — 15 with the FTC's Do Not Call Registry, most often describing impostor calls.
Is (909) 377-4238 a scam or robocall?
15 consumers reported (909) 377-4238 to the FTC, and 60% of those who answered the question said it was a recorded message or robocall. The most common subject was impostor. 9 of the reports were filed in the last 30 days, so the campaign is current. Complaints are a strong signal, not proof — never share personal or payment information with an unsolicited caller.
Should I call (909) 377-4238 back?
Reports about this number are current — the most recent FTC complaint was filed 2026-10-13 — so calling back is not advisable. As a general rule, only return a call you were expecting: a caller with legitimate business will leave a voicemail.
Where was (909) 377-4238 reported?
Consumers in 3 states reported this number to the FTC, most often from CA, AZ, NV. The FTC records the state the consumer filed from, not where the call originated — caller ID can be spoofed to display any number.
WhoCalledLookup is not a consumer reporting agency (FCRA). Community reports are user opinions, not statements of fact by this site; FTC and FCC complaints are unverified consumer submissions. Own this number? Dispute a listing.