Caller ID Spoofing: Why Scammers Can Fake Any Number

For most of us, caller ID feels like proof. If the screen says it is your bank, the Social Security Administration or the local sheriff, why wouldn’t it be? Unfortunately, scammers can make almost any name or number appear. This trick is called spoofing, and it is behind many of the most convincing phone scams.

What is spoofing?

The Federal Communications Commission explains that spoofing is when a caller deliberately falsifies the information sent to your caller ID display to disguise their identity. The FTC puts it even more simply: scammers can fake any name or number.

Scammers use spoofing in a few main ways, according to the FCC and FTC:

• Neighbor spoofing: the call looks like it is coming from a local number, so you are more likely to answer.
• Trusted-name spoofing: the screen shows the name or real number of a company or government agency you know.
• Law enforcement spoofing: in a September 2026 alert, the FBI said scammers impersonating law enforcement and government officials spoof phone numbers, email addresses, employee names and credentials — including those of the FBI’s own Internet Crime Complaint Center.
• Your own number: the FTC warns that some scammers send texts that appear to come from your own phone number. The surprise gets your attention — and that is the point.

EXAMPLE — SCAM

Today 3:15 PM●●● ▮

Incoming call County Sheriff (spoofed)

Caller: This is Sergeant Hayes with the county sheriff’s office. You missed a federal jury duty summons and there is a warrant for your arrest.

Caller: You can resolve this today by paying the bond. I’ll stay on the line while you go to the store and buy prepaid cards. Do not hang up, or the deputies will be sent to your home.

The call above would show a familiar, official-looking name. That tells you nothing. The FBI says law enforcement and government authorities will never contact you by phone or text to demand any form of payment, and will never ask for payment by prepaid card, cryptocurrency or courier.

Why spoofing works so well

Spoofing removes the one quick check most people rely on. Once you believe the caller is who they say they are, a scammer can use a script to create urgency — a warrant, a frozen account, a relative in trouble — and pressure you into paying or sharing personal information. The FCC notes that scammers use information they find online to sound convincing.

How to protect yourself from spoofed calls

The FCC’s advice:

• Don’t answer calls from unknown numbers. If you do answer and something feels wrong, hang up immediately.
• Don’t press buttons to “stop the calls.” If a caller or recording asks you to hit a button to stop getting calls, just hang up — scammers use this to identify potential targets.
• Don’t answer questions — especially ones that can be answered “yes” or “no.”
• Never give out personal information such as account numbers, Social Security numbers, your mother’s maiden name, passwords or other identifying information in response to an unexpected call.
• Hang up and call back using the number on your account statement, in the phone book, or on the company’s or agency’s official website.
• Expect a letter first. The FCC says you will usually get a written statement in the mail before a phone call from a legitimate source, particularly if the caller is asking for a payment.
• Set a voicemail password. Some voicemail services let you in automatically if you call from your own number. A hacker could spoof your number to get into your voicemail if you haven’t set a password.
• Use call-blocking tools from your phone company and your phone’s built-in settings. See how to stop spam texts and calls for the FCC’s step-by-step settings.

The “one ring” variation

Sometimes your phone rings once and stops. The FCC warns this can be a “one-ring” scam designed to get you to call back. The number may look like a U.S. area code but actually be international — the FCC gives the examples of “232” (Sierra Leone) and “809” (Dominican Republic) — and calling back can lead to connection fees and large per-minute charges. Don’t return calls from numbers you don’t recognize, and if you never make international calls, ask your phone company to block them.

What if scammers are spoofing your number?

If people say they got calls or texts from your number that you never made, a scammer is probably spoofing it. Your phone itself usually isn’t affected. Here’s what to do:

1. File a complaint with the FCC at consumercomplaints.fcc.gov. Choose the “unwanted calls” category and note that your number is being spoofed.
2. Report it to the FTC at ReportFraud.ftc.gov.
3. Set or change your voicemail password.
4. Tell friends and family so they know to ignore unusual calls or texts that appear to come from you.

Reporting spoofed scam calls

Report scam calls to the FTC at ReportFraud.ftc.gov (or DoNotCall.gov if you didn’t lose money), and spoofing to the FCC. Include the number shown on your caller ID even though it was faked — it still helps investigators. Our guide on how to report a scam phone number or call explains each option, and phone scams aimed at older adults covers the calls you are most likely to get.