If you’ve been getting angry callbacks or messages about calls you never made, you’re probably dealing with a common issue: phone number spoofing.
In this guide, you will learn what phone number spoofing is, how to know if your number has been spoofed, and how to stop number spoofing from causing you trouble.
What is Phone Number Spoofing?
Phone number spoofing is a technique that allows a caller to change the caller ID information displayed on your screen, making it appear as if the call is coming from a different number.
Scammers commonly use spoofing to disguise their identity, often choosing numbers that look familiar or trustworthy, such as local area codes, businesses, or even real people’s phone numbers.
8 Ways to Stop Number Spoofing
If someone calls you back, angrily demanding to know why you keep getting spam calls, your phone number is likely being “spoofed.”
Here are the effective methods I have tested for blocking number spoofing:
Way 1: Contact Your Carrier Immediately
Currently, all major U.S. carriers (including AT&T, T-Mobile, and Verizon) have adopted the STIR/SHAKEN protocol to verify the authenticity of Caller ID information. However, this system can still occasionally allow spoofed calls to slip through.
You can ask your carrier to assist you with the following steps:
- Flagging your number as “potentially compromised/spoofed.”
- Checking for any abnormal outbound calling activity
- Investigating your account for signs of misuse
If there is any indication of a “SIM Swap” attack or a risk of your account being maliciously manipulated, your carrier can take immediate action to lock down and secure your account.
Way 2: Update Your Voicemail Message
One of the most severe side effects of “number spoofing” is the resulting “callback harassment.” People who receive spam calls often dial back the number displayed on their screens, and that number is yours.
Therefore, simply updating your voicemail message can resolve most of these issues: “If you received a call from this number, it is because this number has been spoofed. I did not actually place the call myself.”
While this cannot completely eliminate number spoofing, it effectively reduces repeated callbacks, thereby avoiding unnecessary conflicts.
Way 3: Watch for Signs of a SIM Swap
A SIM swap allows a scammer to take control of your number by transferring it to a new SIM card. Once that happens, they can intercept:
- Two-factor authentication (2FA) codes
- Password reset links
- Secure account access
Warning signs include:
- Sudden loss of service
- Inability to send or receive texts
- Notifications from your carrier about SIM changes
- Unexpected login alerts on your accounts
If you notice any of these, contact your carrier immediately and secure your accounts.
Way 4: Adjust Your Phone’s Call Security Settings
Most people overlook this step, but it helps limit how your number is used or perceived. On both iOS and Android, you can:
- Silence or block unknown callers
- Restrict outgoing communication
- Disable auto-callback features
For example, you can limit communication to contacts only through Screen Time settings. It’s not a direct fix for spoofing, but it reduces exposure and misuse.
Way 5: Use Call Blocking or Spam Filtering Tools
You won’t stop spoofing at the source, but you can control what reaches you.
Options include: Carrier tools (like T-Mobile Scam Shield or AT&T ActiveArmor), or Third-party apps such as Truecaller or Nomorobo.
These tools help by labeling suspicious calls and blocking known scam numbers.
Way 6: Report the Issue to the FTC and FCC
Both the Federal Trade Commission (FTC) and the Federal Communications Commission (FCC) collect data on spoofing and robocalls to:
- Identify large-scale scam operations
- Track patterns across networks
- Support enforcement actions
If your number is being repeatedly spoofed, submitting a report creates a record that may matter later.
To further reduce your exposure to scams and protect your personal data, using LightningX VPN can add an extra layer of security.
It encrypts your internet connection and masks your real IP address, making it harder for attackers to track your activity or link your phone number to other sensitive information.
With a global network of over 2000 servers and strong encryption protocols, it helps minimize the risk of data leaks.
Download it to access free servers and keep your online activity more private and secure.
Way 7: Consider Changing Your Number
In many cases, spoofing campaigns are temporary. However, if:
- The callbacks don’t stop after weeks
- Your number keeps getting flagged or blocked
- You’re dealing with ongoing harassment
Then changing your number becomes a practical solution.
Way 8: Evaluate Your Identity Theft Risk
Spoofing by itself doesn’t mean your identity has been stolen. If you’re also noticing:
- Phishing messages
- Suspicious account activity
- Unauthorized transactions
Then it’s worth taking additional steps, such as monitoring your credit and checking for data breaches.
Read more: How to Find and Block a No Caller ID Number? Easy Guide
How to Know If My Phone Number Is Spoofed?
Most people don’t realize their number is being spoofed until something feels off. Unlike a hacked account, there’s no obvious alert or notification.
If you’re wondering whether this is happening to you, here are the clearest indicators to look for.
1. You’re Getting Calls or Texts From Angry Strangers
People may call or message you saying things like:
- “Why did you call me?”
- “Stop spamming me.”
- “I missed a call from this number.”
If you didn’t contact them, your number is likely being used as a spoofed caller ID.
2. You discover missed calls or unfamiliar text messages
If you notice unusual activity on your phone, such as missed calls from unfamiliar numbers you never dialed, or replies to text messages you never sent.
This typically indicates that your number is being spoofed (impersonated) to serve as a cover for spam texting or robocalling campaigns.
3. Your number is flagged as a “Spam Risk.”
If friends, colleagues, or clients inform you that when you call them, their phone screens display alerts such as:
- “Spam Risk”
- “Scam Likely”
- “Potential Fraud”
Then your number has likely been reported multiple times.
4. You receive voicemails regarding calls you never made
Voicemails can very quickly reveal signs that your number is being spoofed. You might hear messages such as:
- “I’m returning your call.”
- “Please stop calling me.”
- “You just called me.”
If the content of these voicemails does not align with your actual call history, it is a clear indication that your number is being spoofed and misused.
FAQ about Stop Number Spoofing
1. Can I stop my phone number from being spoofed?
No, you can’t fully stop it. Caller ID systems still allow numbers to be faked, and even with protections like STIR/SHAKEN, spoofing isn’t completely blocked.
2. Is it possible to call back a spoofed number?
Sometimes, but it usually won’t reach the actual caller. In most cases, you’ll either connect to an unrelated person (whose number was spoofed) or get no response at all. Calling back rarely helps and can create more confusion.
