8666654386
Phone number 8666654386 area code and prefix assignment information:
| Country |  United States |
|---|---|
| Location | Toll-free number (not tied to a location) |
Is 866-665-4386 a scam or spam call?
UPS scam
YES, I RECEIVED SEVERAL CALLS FROM 866-665-4386
After requesting a password reset on a Vanguard website,I immediately got a voice-mail call from this number saying I needed to "press 1" to get my new Vanguard password. (No Caller-ID). I did not do so. Googling the number led me to this Scam warning site. Wondering if they have pirated Vanguard's files?
Call ID reads "Unknown". No msg. Same scammer chain calls using different numbers.
Three calls one minute apart. Blocked it.
ALL calls from a number ending in the same two digits (66, 77, 88, etc) are probably an abusive/criminal exploitation of the North American Numbering Plan (NANP)
https://dogedaos.com/wiki/List_of_NANP_area_codes.html
At 6:18am on a Sunday...no message was left. I'm pretty sure it's illegal to spam or bill collect that early. I never answer unknown calls, so I have no idea.
call on cell phone at 8:21 AM went to Spam risk
Call on my cell phone at 8am. Did not answer.
At 3:52 p.m. PST. I don't answer unknown calls. Apparently a bill collector.
Phone number 866-665-4386 has been reported to the FTC 193 times. Roughly 63% of complaints flagged this number as a robocall. Reporting activity last occurred on June 5, 2026. Complaints came from 37 states, including California, New York, New Jersey, Mississippi, Pennsylvania and Connecticut. The cities with the most complaints were San Diego, San Mateo, Camarillo, Lamesa, Riverside, Sacramento, Lockport and Floral Park.
Call Subjects
| Other | 76 complaints 39% |
| Dropped call or no message | 46 complaints 24% |
| No Subject Provided | 40 complaints 21% |
| Calls pretending to be government, businesses, or family and friends | 10 complaints 5% |
| Medical & prescriptions | 7 complaints 4% |
| Computer & technical support | 4 complaints 2% |
| Reducing your debt (credit cards, mortgage, student loans) | 4 complaints 2% |
| Warranties & protection plans | 3 complaints 2% |
| Charities | 2 complaints 1% |
| Energy, solar, & utilities | 1 complaint 1% |
Complaints by Month
Recent FTC Complaints
| Call date | Type | Reported from |
|---|---|---|
| Jun 5, 2026 | Other | Arizona |
| Jun 23, 2025 | Dropped call or no message | Texas |
| May 5, 2025 | Calls pretending to be government, businesses, or family and friends | Kingsland, Georgia |
| Apr 23, 2025 | Dropped call or no message | Maryland |
| Apr 8, 2025 | No Subject Provided | Connecticut |
| Apr 3, 2025 | Other | Burlington, Washington |
| Mar 27, 2025 | Other | California |
| Mar 13, 2025 | Other | Colorado Springs, Colorado |
| Mar 13, 2025 | Other | Colorado Springs, Colorado |
| Feb 20, 2025 | Dropped call or no message | Texas |
Who called me from phone number +1 (866) 665-4386?
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Says it is UPS, has old account number, asks for payment, but payment amount is garbled, %%% and not amount, then give website to go to for making payment. I say it is a SCAM.