Caution should be exercised when verifying the validity of numbers, especially for entities like Amex, as spoofing and phishing are common.
American Express spoof call—what to watch out for! - +1 866-379-3643 ((866) 379-3643)
Summary — +18663793643
Expert Opinion
Calls from 866‑379‑3643 often claim to be from American Express and request personal details. Most reports describe the number being used for phishing attempts that mimic legitimate application verification, asking for SSNs, DOBs, or account numbers. Even though a few callers say the line is authentic, the consensus points to spoofed IDs and a high risk of identity theft. If you receive such a call, hang up, independently verify the request using the official number on the back of your card, and never share personal info until you’re sure it’s a genuine Amex representative. Report suspicious calls to your card issuer and consider placing a fraud alert on your credit files.
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Rate this number — +18663793643
Recent Reports for (866) 379-3643
The call was a legitimate verification of account changes from American Express.
Following a suspicious call and voicemail with a 4-digit code, I contacted Amex's regular customer service number and was informed that the code indicated a potential attempt to apply for an Amex card in my name.
A call to American Express revealed that this number, 1-866-379-3643, is not legitimate and is, in fact, a scam.
Today, I received six unwanted calls from this number
A recorded message was left on a call received in Taunton, Massachusetts, categorized as a robocall.
The caller claimed to be from American Express
The call was from American Express, concerning an application submission.
A message was left for a family member from this number, claiming to be regarding a new application, but the conversation with the service representative was unproductive and suspicious.
After applying for a credit card and speaking with the representative, I can confirm that this is indeed a legitimate American Express communication.
It's wierd that they knew i opend an account with american express, and they also had my ssn and phone number.
The American Express New Accounts Team uses a specific number when there are concerns about a new card application, such as potential identity fraud, to verify the applicant's identity.
Multiple voicemails from this number referenced an American Express request, which was verified as legitimate by the AMEX customer service, but the request itself was fraudulent.
A call was received from an individual with an Indian accent, claiming to represent AMEX, and requesting sensitive information, which raised concerns about the authenticity of the call.
After researching the number, i found out it's AmEx new account department, it's not a scam, they were calling to verify informations about a new account
Although I have never had or applied for an Amex card, this number appears to be legitimate as it is associated with the new card fraud department. After contacting the 800 number I found online for Amex, they were unable to locate any applications under my name or phone number. I reluctantly provided the last four digits of my SSN, but they still couldn't find any application. I was added to a do-not-call list and verified that no card application existed. I plan to call back later with the case number they left on my machine to further investigate.
This number has called me twice, attempting to open an American Express account in my name.
Scam caller, CLAIMS to be somone named donna vincent or ellen robert or somthing, also mentions som places and numbers, 2460 318 317 315 312 316 314.
All week, I've been recieving calls from this number, finaly I cald back and they said they neede aditional informations for my aplication, wich is a scam becuse I never aplyed.
I verfied with AMEX that this number is oficial, so its not a frauduluent call
According to the comments, a call from Sam at 8663793643 included a message with a reference number and another number to call back.
I received two calls with the same reference number, claiming it was regarding a request in my name, with different callers providing the same reference number, AG4n8, similar to a call from last year.
It turned out that the call was from American Express, and I had indeed received a card from them.
Confirmation was made that the call was from Amex, as a new card application was pending and required verification, including providing a SS# for approval.
Following the loss of my ssn card, I recived a call from this number claiming somebody had applied for an American Express card in my name, but luckly it wasnt a fraud after checking with American Express custom service
I'm not being paranoid or anything, but I got a letter adress to my deceased mother, they said they needed more info to open her account, thats just crazy
I returned the call, and it seemed legitamate, but I am still skepticall about their intentions
Seemingly, I recieved nearly simultanous calls from this number on August 27 asking for informations and telling me that there had been two applications for AMEX cards filed in my name, but I wouldnt supply any informations, gave them an alternate adress
I called AMEX and they told me this number dont belong to them, thats odd
Thanks alot!!! You are absolutly corect!!!