How do I spot a spoofed phone number?
Caller ID is not proof of identity — anyone can spoof any number. Hang up and call back using a number from an official source if you receive an unexpected call claiming to be from a bank, government agency, or utility.
Last reviewed: 10 June 2026
Explanation
Phone number spoofing allows a caller to display any number they choose on your caller ID. Scammers use this to impersonate your bank's fraud line, government agencies like the IRS or Social Security Administration, and even numbers you already have saved in your phone. The caller ID is decorative — it carries no verification that the person calling is who it says they are.
The clearest sign that a call may be spoofed is that the caller creates urgency around your money: your account is about to be closed, you owe back taxes and will be arrested today, your Social Security number has been used in a crime. Real banks call to ask if a transaction is authorised, then wait for your answer — they do not instruct you to take action immediately. Real government agencies communicate by postal mail first and never demand immediate payment over the phone.
The safe response is to hang up — politely if you prefer — and independently dial the organisation's official number. For your bank, use the number on the back of your debit or credit card. For the IRS, use irs.gov. Do not call back a number left in a voicemail or given by the caller, as this may connect you directly back to the scammer. Wait five minutes before calling if you are using a landline, as some scammers hold the line open and you may reconnect to them.
Your phone's built-in spam-call screening (Google Pixel's Call Screen, iPhone's Silence Unknown Callers) and third-party apps like Hiya or Nomorobo can identify and filter known spoofed numbers, though they cannot catch every one. The only certain defence is the rule: unexpected caller + urgent demand + money = hang up.
Common red flags
- Caller ID shows your own bank's name but the caller immediately demands action
- Government agency calling demanding immediate payment to avoid arrest or deportation
- Caller insists you must stay on the phone while you take action
- Known contact's number calling about something urgent and financial out of nowhere
- Caller asks you to confirm your full account number, PIN, or SSN
- Call feels 'off' — scripted, heavily accented in a way inconsistent with the supposed agency
What to do now
- Hang up on any unexpected call creating urgency around money or your accounts
- Find the organisation's number from their official website or card and call that number back
- Never call a number left in a voicemail by a caller claiming to be from a government agency
- Enable spam-call filtering on your device or install a third-party call-screening app
- Tell elderly family members that caller ID cannot be trusted
- Report spoofed government-impersonation calls to the FTC at ReportFraud.ftc.gov
Frequently asked questions
Can my phone company stop spoofed calls?
Carriers have deployed the STIR/SHAKEN framework that cryptographically attests that a call's number matches the originating network. Calls that pass show 'Caller Verified' on some phones. However, this does not cover all calls and scammers route around it using voice-over-IP intermediaries.
Can I tell just from looking at the number whether it is spoofed?
No. A spoofed number can look exactly like your bank's legitimate published number. The only reliable check is to initiate a call back through an independently verified number.