Skip to content ↓ | Skip to navigation ↓

Have you ever received unwanted calls from auto-dialers and telemarketers at a time when you did not want to be called? Has an auto-dialer or telemarketer ever tried to scam you? Have you noticed that the numbers of certain incoming calls don’t seem accurate?

If you have answered yes to any of these questions, you might have seen a spoofed caller ID. Anyone can spoof a phone number and make it seem like another person is calling. In the past, caller ID spoofing has been used to break authentication on voicemail. However, there are a number of ways to protect yourself when you think the caller ID has been spoofed.

What Is Caller ID Spoofing?

Caller ID spoofing is the process of changing the caller ID to any number other than the calling number. When a phone receives a call, the caller ID is transmitted between the first and second ring of the phone. To transmit the caller ID, we use a technique called Frequency Shift Keying, which transmits the caller ID in a binary format. It is possible, during this part of the call, to transmit the caller ID we want instead of the true number.

How to Spoof?

There are multiple online services that offer caller ID spoofing for a price; some even offer a 30-second free trial, so you can try out the service. To make the service work, all you have to do is provide three pieces of information: the phone number you want to call from, the phone number you are calling, and the number you wish to show up in the caller ID.

Once all the information is provided the service will create a conference type phone call and connect you to the number you have specified. If you wanted to, you could potentially set up something to spoof caller ID yourself. All that you need to do is set up a host with Asterisk and then have a SIP trunk line.

Some service providers have been known to allow any number in the caller ID sequence sent out on Primary Rate Interfaces. This allows any company having a legitimate purpose change the caller ID to a number they specify. Unfortunately, it also allows anyone who owns a Primary Rate Interface to specify a number for malicious purposes.

Can you bypass authentication?

Voicemail used to use caller ID as the only form of authentication, allowing anyone to spoof the phone number and listen to the messages. This was a very insecure policy and most voicemail services have been updated to protect against this attack.

Are there ways around caller id spoofing?

The call-back method allows for some security when you think caller ID spoofing is being used. You could put the caller on hold, and then call the displayed number. If the number is busy or you reached the company they said they are calling from then they are potentially telling the truth.

However, they could be forwarding you to the company. At that point, when you are on phone with the company in question, you could ask whether or not the person is calling on behalf of the company.

The final check you could make is to enter the number in question in a search engine. This allows you to see if the company has the number on their website or if the company has mention of a scam that is going on. It also allows you to figure out what other people are saying about number.

Real World Example

Earlier this year, a tax scam in Pottsville, PA, claimed to arrest victims if they didn’t pay outstanding tax debts. The caller ID that was spoofed showed that the originating call was from a Pennsylvania phone number: 570-622-1234. This number belonged to Pottsville City Hall, giving a false sense of security to anyone who received the call. The police warned of the scam and reminded Pottsville citizens to never give out any personal information over the telephone.

What you should know Legally

It should be noted that spoofing a phone number with malicious intent is against the law. In Canada, the CRTC suggests suspected victims file a complaint if they believe the caller ID has been spoofed by a telemarketer.

The FCC also prohibits the use of using caller ID spoofing with intent to defraud, cause harm and wrongfully obtain anything of value.

If you ever question the number that you see on you caller ID, remember to be cautious. When anyone has the ability to call you as another person or company, it’s impossible to know his or her intentions. Make sure to take the time to verify the person on the other end of the phone.


10 Ways Tripwire Outperforms Other Cybersecurity Solutions
  • Dorothy

    First someone stole my identity and filed Income Tax Return with in my name and someone else's and now I'm getting phone calls from my own phone. Now I received a check for 1,230,946.00All I have to send them 12.99 and it's mine. Go figure.

  • Paul

    One of the ironies of the FCC reporting is that you don't know the actual number or entity that defrauded you because the number was a spoofed one. How to report?!

  • Nunya Bidness

    Report spoofed numbers to and also your phone service provider. Soon the FCC will require phone providers to block unwanted calls upon request by customers. But you have to report the stalker/harassment.

  • Anon E. Mouse

    "The FCC also prohibits the use of using caller ID spoofing with intent to defraud…"

    Quote "prohibits"

    TOOTHLESS "prohibitions" and TOOTHLESS FCC.



  • Misty

    Someone has been calling a family member at 1 in the morning using my cell number! How can they do that ? My phone was even turned off at the time..

  • Gary

    All that has to happen is to close the technical loophole that allows the "caller" to change the caller ID. Make it such that only the provider can change the ID, and then only when certain conditions are met:

    1. The requested number MUST ring to a live person (recordings prohibited) 24/7.
    2. The requested number MUST be registered to the person/company making the request.

    No third parties and no exceptions.

    In addition, make 3rd parties that create these "conference" call setups in an effort to hide the true source of the call equally culpable in any lawsuit or criminal prosecution.

    • Mel

      Gary you got it nailed! Its not rocket science; I can't understand why the authorities are not doing this already.
      Every time I get one of these calls I give them some very colourful invective until they hang up. Guess what? The calls are becoming much less frequent now!

  • Peter R Mare

    This just happened to me. Our phone rang, caller ID stated that the call was coming in from our own number in our own name. The phone rang 5 times, we did not answer, called Verizon tech service and Ian never heard of this, then after holding, he gave me the Verizon fraud unit phone number, 800-257-2969. When you call this number it gives you 4 choices. Number 4 states that there is nothing they can do to prevent caller ID spoofing. What if we answered? Could that person, who may be a terrorist, use our phone number to plot a deadly attack and then the FBI knocks on my door and says I am a terrorist? Technology is beyond normal human conception to realize potential terrorist ability to use it to take us back to the good old days in 800AD

    • Geno2733 .

      This shit happened to us about a year ago.. Verizon said they were aware of the problem, and that there wasn’t anything they could really do about it.. At least T-Mobile is trying to eliminate the problem, for my cell got spoofed, and I reported it to them.

  • Notorious_bob

    the FCC forbids it but doesnt enforce diddly. pointless. we should send seal team six to the home of anyone caught using this. we ignore the geneva convention any other time.

    • You’re Fired

      You go Donald, hey, you should run for President!

      • Notorious_bob

        yeah, you see how well that’s working out for him. the majority wants a country of people that roll over and let life happen to them because assertiveness and self-worth are viewed as tyrannical now.

  • Willie Trumble

    Ask them for number to call them back because you’re really busy


    contact your carrier. If it’s Verizon good luck!

    • guest12345678

      Or you can set up your own network capture system and trace the call to the actual VOIP origination location then go visit them with your complaint…


    Oh Dear God Dorothy – that’s a very old scam. The check looks real and is verifiable when presented to a bank. It’s not!

  • Mojo_jo_jo

    If I don recognize the number I don’t answer it. I let my answering machine pick it up and most of the time no message is left and therefore is usually a scam.


    Spoofed? Yeah. I just called myself. My number and named showed up on caller ID.

    • Liane Laskoske

      Same here. I got the guy talking for a bit and then roared DO NOT CALL ME! into the phone. I think I broke his eardrum. I hope I did.

      • Paula Hunt

        Liane, I remember back in the day when we used to keep a whistle by the phone, sadly I think it is time to get the whistle out again. I also used to play with the telemarketers and ask them filthy, dirty, nasty questions until they became so disgusted they hung up.

  • biffula

    The problem nowadays is that these calls are originating from foreign countries who could care less about u.s. law. They just want people money.

  • DogAunt

    I haven’t found any legal, effective solution but one: a police whistle. I wait until a person is on the phone and talk very quietly for a few seconds–ask if they can hear me, then put the whistle in my mouth, fingers in my ears, take a deep breath and blow the hell out of the whistle into the phone. Yes, it works because it also usually damages their equipment! Hooray!

    • TheLawToday

      Not a good idea. One of the two people on the other end is innocent. That means YOU become an asshole too. Thats the spoofer’s advantage and reason in the first place. Its like being framed.

      • Neo404

        Not really. Maybe when these people get the same results over and over they will realize they are as guilty as the people they work for. Caller —> “Gee people keep saying that my number looks odd or not right and looks -spoofed- hmm, am I working for a spoofer company?” …….Like WTF yeah….

        • Comic BookGuy

          I tell them that what they are doing is illegal and if their employer knows that then they probably aren’t going to pay them either. They always hang up, even when they sound American.

        • TheLawToday

          In this described situation… yes, really. One is innocent. You just don’t understand the logistics behind this brand of spoofing.

      • Blayze Kohime

        Any company that uses that sort of telemarketing in today’s world is a scam. ANY and ALL of them. Anyone that calls you out of the blue and asks you to give them money for anything is a scam. period. No exceptions.
        And there is no way that the person on the other end of the line does not know this. They either know, or they are so ridiculously stupid that they can’t figure it out. Either way, I have no pity for them.

  • Dawnsdad

    idk about other carriers, but Verizon offers a service that directs calls from numbers not in your contact list to voicemail. But they charge $5 a month. In my opinion, by doing so, they are profiting from the prohibited activity and, therefore, just as guilty as the scammers. They should offer it for free.

    • guest12345678

      Any Samsung phone can be set to do not disturb then set permissions to allow only callers in my contact list. This stops most unwanted calls since robo callers rarely want to leave messages to avoid giving their prey a valid number to pass on to phone companies.

    • Bill Engvall

      Here’s your sign…

  • anon-telecom-engr

    The current carrier system is SS7 and they CAN stop CID spoofing, but that is not profitable. By setting their call switches to prevent inbound CID information being used and appending the correct CID information from their own CID database for that circuit, the spoofing stops. To stop calls coming in from ‘numbers not in use’, each end point call switch would have to query the carriers own database and then disallow the call to complete. This is actually very simple, but since they never implemented this type of security to their call switches it would cost a fortune to reprogram every call switch in every local carrier location.

  • wanderingwillows

    An autodialer calls my phone about once a week supposedly having an offer from Merriot Suites, the worst part is it calls from XXX-750-XXXX and always has the same zip and prefix but the last four changes each week. Problem is I get a call back from some other person with a 750-xxxx number thinking i called them and I’ll call someone else asking if they called my 750-xxxx number. It’s a little annoying.

    • Bill Engvall

      Well, they spoofed your phone and a multi-billion dollar company, Merriot??? Is tripwire really this full of Bill Engvall “Here’s your sign” idiots?

  • 2spooky5me

    I got a call once from a telemarketer… I pranked them like a friend of mine did once and made them think they phoned an adult toy shop… If u get my drift… They never called back…lol stupid idiot telemarketers r so fun to mess with…

  • Stormie

    I had to change my number because I blocked telemarketing phone numbers but they use this spoofing practice, so blocking each incoming call wasn’t a help. Sometimes I hate technology for so many reasons. I wish we could go back to the days when everyone’s phones were tied to a wall and we had to dial our numbers.

  • Tiger

    Sign up with NoMoRobo. Free for landlines for many carriers. Not available yet for mobile numbers, though. One ring and it sends the call to a dead line.

  • Mars

    The call was not from the irs scammers. The call was to see who was home and who wasn’t home. The call was intended for a specific person – a person who would recognize the caller ID and/or the phone number and know who was calling. If that person is alone, they will answer the phone with a code word, maybe “yo” or “sup dawg”. The caller will then know that it’s safe to talk. If privacy is compromised, due to other people being in the room, the intended recipient will simply answer the phone with a “hello”, and not use the code word, letting the caller know that now is not a good time or if the call goes to answering machine, a recording of a telemarketer or a scammer will be played and the whole event will look exactly like a common nuisance call. In reality, it’s the equivalent of the old “let the phone ring once” trick. You call and let the phone ring once. If it’s a good time to talk, the intended recipient can call back. If it isn’t a good time to talk, well then, it was just a random single ring. Get it?

  • frank

    got a cordless phone that you can block thirty numbers, but I need more memory

  • Blayze Kohime

    Don’t use the callback method, some scammers WANT you to do this. They set up a phone number that will charge you by the minute and then try to trick you into calling it. Sometimes they won’t even speak to you; they’ll just ring your phone once and count on you calling back the number you see in your call id.
    Go to the Internet, look up the company they claim to be, and IF it is a legit company, then call the number you find on their web site to verify them. NEVER call the number that they give you.

  • Comic BookGuy

    They are spoofed so this won’t do anything but block innocent people.

  • LorDor

    They should just disallow spoofing by law. Stop the practice and protect the public. What has happened to common sense?

  • DBH

    Regardless of the “Person on the other end” Spoofing is a crime and therefore a LIE. It’s deception to get you on the phone. If the person on the other end is as innocent as you think, ask them for the location of the company, a call back number, and I’ll bet they hang up, or, get aggressive. Simply install Extreme Call Blocker from the google app store. Be sure to to to settings and white List all your contacts. Since installing this, I do NOT get these calls. Anyone calling you out of the blue trying to sell you “SECURITY” or a CRUISE is a SCAM. I agree with Gary, and I agree that Verizon and the others should be protecting it’s investment. CUSTOMERS

  • DBH

    Regardless of the “Person on the other end” Spoofing is a crime and therefore a LIE. It’s deception to get you on the phone. If the person on the other end is as innocent as you think, ask them for the location of the company, a call back number, and I’ll bet they hang up, or, get aggressive. Simply install Extreme Call Blocker from the google app store. Be sure to to to settings and white List all your contacts. Since installing this, I do NOT get these calls. Anyone calling you out of the blue trying to sell you “SECURITY” or a CRUISE is a SCAM. I agree with Gary, and I agree that Verizon and the others should be protecting it’s investment. CUSTOMERS

  • Gary

    So The Article header Says,”How to Protect Yourself From Caller ID Spoofing” Where Is the Information To support The Article? It Tells You How to Spoof, Your Legal Recourse And What Spoofing is. But Not how to protect youself?

  • Susan

    My problem is my phone number is being used in spoof calls, and people are calling me to see who called them. I am getting around 10 calls a day. Some people are getting repeat calls.
    I have talked to the FCC, and they are unable to do anything. They are working on legal avenues, but can do nothing at this time. FCC rep said that people have reported similar issue lasting a few days up to a couple of months. I have been dealing with it for 1 month.

    I do not want to have to change my phone number! I have put a message on my voicemail telling people who don’t know me to block the phone #.

    • Love to travel 2014

      We are going through this right now. Our number was spoofed. Over 200 calls in the last 24 hours with people calling us, even threatening us. We reported it to the FCC and there is nothing they can do. The phone company can’t help us either. This is a number that we have had for 16 years and we use to market our vacation rental. We have had to turn the phone off and put on our answering machine. Some people don’t even listen to the whole message where we say we have been spoofed and think we are trying to get them to rent our property. Total nightmare. This is threatening to ruin our business. I was hoping from the title of the article that they had some solutions.

  • Hsd3

    The number on my call logs is 864-534-9588 the last 4 digits change every time Greenville sc it says there not on phone in recents .call logs showing I called them numbers I didn’t ,it’s a lot of them happens most when I calling my wife

  • Ernie

    I receive an harassing spoof call nearly every day – sometimes several times a day. The caller ID provides a number, but it’s not the real number calling me. When I answer the call I hear the sound of a fax machine trying to make a connection. But, it’s a pre-recording, not an actual inbound fax call. Has anyone else receive this type of harassing call?

  • Verizon CEO

    LOL, have you heard of technology?

    • Fred H

      Of course, what a stupid question. The FCC should pass a law that there are no anonymous phone calls period. The person on the phone can remain anonymous but the owner of the phone will still be identified….that way people will be accountable at least to give information about who used their phone if it was used to commit a crime!!

      Great post Gary!!

  • Fred H

    Remember the customer can get what they want in these circumstances.
    If company won’t meet customer demand….customer’s find a company that will!

  • Steve W.

    Folks, the horrible truth is the FTC (No Call List enforcement) is a total scham! I have handed the FTC directly, very specific information regarding “robo-call” centers and the FTC and other authorities do NOTHING! Simply research on the internet, look at the FTC and Florida State Attorney General case November 2014, Even by their own figures, these “rono callers” scammed almost $23 MILLION dollars from SENIORS alone. What di the FTC settle for? Some $79K in JUNK ASSETS (old car, boat, etc.) .. and NO ONE WENT TO JAIL! The FTC does NOT care and clearly shows CRIME DOES PAY! The FTC contacted me directly (an individual) and I have more information regarding this subject than the FTC does (pathetic but true). They wrote me in early 2015 (I have the letter) requesting my information and assistance. I advised them that I would assist, but ONLY if I were allowed to be added as a Plaintiff in the case (to make sure the 2014 bs fiasco would never be repeated)..they declined! I also recently (2016) located a DIRECT line into one of the largest robo call centers operating in the US (in US territory) and gave this information directly to the FTC office in Chicago (who is in charge of this operation) and they once again did NOTHING! So to rely on ANY “authority” is a total waste of time! The only way to help curtail this plague is to ENGAGE then directly! Whenever a robo caller contacts you and is selling a “product” (one of the most common now is the “health monitor systems for seniors”). TAKE THEIR PRODUCT..and this is 100% LEGAL! I use a low limit credit card specifically for this. Order their product and once you receive the unit, immediately contact your CC company and dispute the charge. You can advise them of why you are doing it and the vendor is in violation of FEDERAL LAW. Tell the CC company to block any and all attempts of any charges from the vendor. The KEEP THE UNIT, do not even open the box, just put it aside (I have dozens in a closet). Then when the vendor contacts you again, clearly tell them they are in violation of federal law and you are holding the unit as evidence for federal prosecution (which is TRUE). You will not be getting any other calls from the vendor..I never have. When you take their units, you take their inventory! Then, amazingly, you stop getting those robo calls! It’s the only remedy currently available, because, again, the “authorities do NOTHING..and this is 100% LEGAL! It will be up to the consumer to take action to help make this plague stop.

  • DCHsr

    The FCC was created to tell what we already know and fine and regulate us for the money. It is aways the money.

  • josephine young

    I am being spoofed right now.This has been going on for about a year.Everybody and their mama listen to my call my calls from my mobile device and no one is listening. Fake IP address call from fake numbers and changing the software in my device.It never ends.

    • Bilked Brink

      I have changed phones, numbers, and carriers many times. Does this work for you?

      • Hannum


  • dew

    There’s no suggestions here.

    • Punish Vinti

      Cause they such I was trying to find out who’s spoofing me no info on how…

    • Punish Vinti

      Fcc is a real joke…

  • bumrocks

    Worthless article that provided no insight on how to trap the actual number. Thanks for nothing!

    • Punish Vinti

      They suck

    • Trident

      It used to be that when a call came in, if you didn’t hang up the connection remained until you did even if the calling party did hang up. They lost he use of their phone and it preserved the connection and enabled a trace.
      But with the Electronic Switching System (ESS) for landlines and the tower-hopping nature of mobile phones and the IP connection with VOIP, that tool is gone.
      Once they insert that phony number into the stream, there’s no way to get back for the average Joe.
      But when I get one, I save it to contacts with a “no ring” ring tone. They stop calling after a while because nobody answers.
      I agree that the “Do Not Call” list is worthless. And toll-free numbers, charities and political organizations are exempt from that law, anyway.

  • Rex Ryan

    They have become better by randomly spoofing a number similar to your own number. Transonic Technologies in Pakistan does this.

    • Gary Cheng

      This has just happened to my number recently. Received calls from numbers with different last 4 digits only. I missed then called back the first few numbers, all reached private numbers of people who had no clue. Picked up the last one yesterday, got a recorded scam ad and hanged up before I could make option. Really annoying.

      • Hannum

        Can’t that somehow be classified as harrassment of the person’s number they are impersonating? I went though my missed calls list on my work cell . Which I do not have turned on when I am in the office. There were a bunch that started with the area code and exchange the same as my cell, So I figure it is someone on the road from work calling. I got one poor guy on the phone who said he gets a bunch of calls like mine daily asking why he called them, many are irate because they are on the Do not call list. Seems to me this should be illegal for legitimate businesses.

    • Danielle Porter

      Yep this is exactly what I’ve been getting the last month now.

    • Michael Crew

      does anyone know how to tell if wife is calling from cell spoofed?

  • linda

    Exactly. We got a fake ID caller. Those apps they use can change their voice to male or female. This one claims she’s a specific woman. And she does work for the law firm. She’s hacked both g mails and download his contacts. She pretends to work for the federal government or at the attorney. Called all my fiancee family and ex wife with along some friends. FCC is a joke. Her name and number is online. Supposedly her real number. She stalks Facebook pages. They harass you until they get money from you

  • Jennifer Wills-Rees

    My home phone is calling my home phone

    • Jonatha Cooper

      That is how ppl tap into your voice mail. They call from your number and if you have skip pass code on when you call from your own number then your vm is not secure. Put on a pass code for when you call vm from your phone.

  • Eric Duschene

    I once got a call with my phone number in the caller ID. Clearly it wasn’t legit. I just hope they didn’t use my number to call thousands of other numbers as well.

    • Stormy

      Sadly a lot of these “randomly” picked spoofing numbers get put on Community Black lists. Since the black lists are shared the spoffing I have read defended in so many sites as useful and of no harm could get your number blocked by a lot of call blocking programs. Then your phone is suddenly useless.

  • P minz

    I have even got calls with ID showing (000)000-0000. yup caller ID Spoofing.

  • Misleading headline – a total waste of my time. There is nothing here saying how to protect yourself. If you are so hard up for someone to read your articles that you have to make misleading headlines then you need to rethink your career choice. This is an epidemic in our online writers today.

  • Victara Blackstarre-Vagabond

    I’m getting calls from people saying they received a missed call from my number. They say the message they got was regarding their credit card. Then I got a call asking about my credit card info. I reported them to the FCC, but the called ID number they used is not their real number. They are spoofing numbers. I’ve been getting calls all day. Don’t know what to do. This article did not help AT ALL!

    • Danielle Porter

      That’s what’s started happening to me lately! When I answer the calls they hang up when I tell them I’m on the national do not call list or ask them to take me off their calling list, and they call back from a different number from the same area again the next day. I want to know how to tell what the actual number is otherwise guess I gotta light a fire under straight talks arise because I’m pressing charges for harassment, and being mynumber is in that registry it’s going to cost their company $10k fine per call. (I used t o work in telemarketing).

  • TruthSeeker

    Spoofing needs to become a FELONY! A felon, beknownst to me, is using my telephone number to spoof my crazy neighbor, and others. Fortunately for me, the telephone company knows that the calls are NOT actually coming from me, and my telephone. I have also made many complaints about it to my telephone company, however, until it becomes a felony, the nutjob will continue to commit his pranks, just like her evil daughter did, before she died in 2013. These cyber crimes, or what ought to be cyber crimes, will only become more serious, if NOT STOPPED.

  • TruthSeeker

    Her evil daughter, meaning the daughter of my crazy neighbor, thankfully now deceased.

  • Rockingchair

    The best way to protect yourself from spoofing? Simple. DON’T ANSWER THE PHONE IF YOU DON’T RECOGNIZE THE NUMBER. Period.

  • Sean

    the FCC does fine companies and organizations that it determines have perfomred illegal activities for billions of dollars a year. I am sure that they don’t have the resources catch or even investigate every case, though.

    • Ruby

      What if the spoof caller is an ex or stalker?

      • Sean

        I would imagine that if there is no intent to defraud, cause harm or wrongfully obtain anything of value, and there is no malicious intent then it is legal. If there is malicious intent I would speak with authorities (police, divorce lawyers, etc.)

        • Morris [US], Al

          @Sean – WTF are you talking about? First stalking itself is causing harm and is malicious in itself. Authorities can’t do squat and you know it. The FCC sucks simply because with today’s technology, we should be able to simply press a button and block calls from a million numbers if necessary. Somewhere money or an agenda is involved, you can be assured. Politicians want the freedom to harass your ass until hell freezes over and they are afraid such a device will block their stupid robo calls.

          • Sean

            Your comments do not contradict mine, and practically speaking I completely agree with everything you say. I implied that if there is malicious intent then it is illegal, I did NOT say that stalking isn’t malicious. I am in no position to judge whether Ruby’s situation does or doesn’t involve an ex or stalking. I agree that authorities probably won’t be able to do squat but that is the appropriate logical response to cover your bases legally in that situation (and create a paper trail to reference for future court records, custody battles, etc)

      • Dana

        I had this problem with my husband’s ex. Tons of people calling me to say I called them, I never did, and I had proof I never did on my phone bill. Turns out my stalker did it to harass me eventually hacked my phone herself. Had her arrested and got a restraining order and a new phone and number, but I STILL get harassing calls daily and the FCC does nothing! Despite her arrest!

      • William

        If you can prove that then get law enforcement involved.

  • CCD

    Right now, I am receiving two Caller Spoofed ID calls per day. The calls are easily recognizable because they always begin with my landline’s area code and the first three numerals of my telephone number. This is how I deal with the problem.
    I do not answer the calls. Nomorobo will not recognize these calls because the Caller ID is usually a person’s name. In most instances, you will not recognize the person’s name, too. If the caller is legitimate, he/ she will leave a voice message and a legitimate return number. Next, I use Comcast’s call blocking feature by dialing *60 after the phone stops ringing. Option 2 followed by # automatically records the number for you.
    According to the phone company, most spoofers stop when they repeatedly do get a response. Be patient and never answer a call from a person or business you do not recognize.

  • freebird22

    This “card services” shows as a local number but is different each time but the first 6 numbers are always local…dial any one of them back and you get the disconnected not in service recording….the to 7 talk to a service rep..

  • Karen Umphery

    My daughter just left an abusive relationship and has restraining order . She has been receiving calls from my phone number used into tricking her to think its me from her abuser. How can this be stopped?

    • Trident

      Get another number. You can use Google Voice. You call it from your normal phone and tell it do dial her number showing the Google Voice as the Caller ID. You can forward her calls from Google Voice to your phone.
      Just give that number to her.

  • Jim Peachley

    If a caller’s intent isn’t malicious then why else would they need to hide their
    number? If they’re calling to sell me something (thereby obtaining
    something of value from me, my $$$) and their very first call must be
    disguised to trick me into answering, then THAT is the very definition of
    fraud.Today I received three calls within half an hour, coincidentally from numbers within a few hundred of my own. And since I do not answer calls from unknown numbers, I let them go to voice mail. Surprise! Two of them left the IDENTICAL 16-second tailend of a pitch for some Medicare-covered back brace. My immediate thought was that someone has now developed software to spoof numbers close to their target numbers, giving the illusion of relative safety. So I called back all three numbers to let people know that their numbers had just now been used by telemarketers. One didn’t answer and their mailbox was full. Two were momentarily silent, but were then grateful for the headsup. So next time, call back those unknown numbers. That just might get the FCC ball rolling if they get more and more complaints from the owners of spoofed numbers.

    • Barb Catron

      I have received calls on my landline showing my own number on caller ID.

      • Trident

        There’s a fix for that. It’s called “diagonal side-cutting pliers”. Or if you’re a gentle person, disconnect that little plug.
        Seriously, I bought MagicJack and have been using it for over 10 years. I have paid a total of $250 and I’m on my 3rd 5-year renewal.

        • Harry

          i have 2 magic jacks, i’ve had spoofed calls on both. i even had calls from my own number.
          i’ve also had calls from numbers that were not in service.

    • Sherry Daniels

      If a business has multiple phone lines but wants all their outgoing calls to show a central, main number they use this spoofing. This way the caller ID shows the business name and main callback number. That is the only legitimate reason I know of for spoofing. But criminals are using it to make it appear that their call is a local number so you are more likely to pick up.

    • Swordflame

      I have used it to hide my caller ID, to stop people from calling me back, mainly for scambaiting, however, I use large companies that won’t be scammed when they call. Perfectly Legal

      • Jim Peachley

        I don’t believe you quite understand the subject of the discussion. We’re talking about telemarketing calls that HIDE BEHIND computer generated SUPPOSEDLY LOCAL numbers. And BTW, people can’t call you “back” if you don’t call them first. The only working solution is to stop answering calls from numbers you don’t recognize. These calls have nearly stopped for me, but it’s taken about a year of sticking to the plan.

  • Tired of spam calls

    I’m buying a blow horn for the next spam caller I receive.

    • Stormy

      I did that with a whistle…worked a whole lot better than the Do Not Call list

  • Suros

    “How to read an article about how people will screw your number.”
    Yeah, I now have 0 additional methods to stop someone from using my number illegitimately.

  • Informed

    Why cannot these phone company IT geniuses prevent spoofing? All they have to do is change the protocol so the number is the number of the phone used to place the call. Get the incompetent standards committee together and solve this huge problem. Make spoofing impossible.

    None of our electronic communication systems were designed with security in mind. The protocols must be changed to prevent all the annoying and illegal spoofing activity for email, texting and calls.

    • Trident

      Why cannot these phone company IT geniuses prevent spoofing?
      I’ll tell you why.
      There’s no money in it.
      They could prevent texting while driving by having the tower not communicate in text mode with a phone that’s moving faster than a walk. But they don’t, because nobody’s written a law that requires them to do that.
      And with VOIP, I can write a program that makes calls outbound over a modem and spoof the number automatically. That’s how robo-calls work.

  • old_redneck

    There’s an easy solution. If you don’t recognize the caller ID or the number, don’t answer.

    If it’s a legitimate call, they’ll leave a message on your answering machine. Occasionally a scammer will leave a message but those are easy to detect — no one is going to give you a free back brace, cruise to the Bahamas or a time-share. Just delete those messages.

  • Know Kname

    Under the Truth in Caller ID Act, FCC rules prohibit any person or entity from transmitting misleading or inaccurate caller ID information INTENT TO DEFRAUD, CAUSE HARM OR WRONGLY OBTAIN ANYTHING OF VALUE.  IF NO HARM IS INTENDED OR CAUSED, SPOOFING IS NOT ILLEGAL.
    1. The following is a quote found on numerous TELEMARKETING SOFTWARE WEBSITES pushing a deceptive practice called LOCAL PRESENCE DIALING.

    “Local Presence Dialing definition: is the practice of making it SEEM as though a call is coming from a local area code, EVEN WHEN IT ISN’T. (Note that this differs from caller ID spoofing).” (caps added)

    Apparently if a telemarketer spoofs a local area code it is not spoofing.

    Under the Truth in Caller ID Act 2009, FCC rules prohibit any person or entity from transmitting misleading or inaccurate caller ID information with the intent to defraud, cause harm, or wrongly obtain anything of value.  If no harm is intended or caused, spoofing is not illegal.

    2. H.R. 423, ANTI-SPOOFING ACT OF 2017 is in the legislative House of Representatives queue. I do not believe the ANTI-SPOOFING ACT OF 2017. WILL ADDRESS, DELETE or REMOVE the following phrase from the current FCC2. LAW or RULES:

    “with the intent to defraud, cause harm, or wrongly obtain anything of value.  If no harm is intended or caused, spoofing is not illegal.”

    Data & Marketing Association, formerly the Direct Marketing Association
    American Teleservices Association, formerly the American Telemarketing Association, etc. aka Congressional Lobbyists

  • EricWelch

    These scams are getting out of hand. My number has been apparently used as caller ID to make lots of random calls. Then I get calls from people asking why I called. I have contacted the FTC and my Congressman as well as Verizon, my carrier. It would seem to me it shouldn’t be that hard to program a system that whenever a call is made the system checks to see that the call originated from the SIM card linked to that number and if not don’t let the call go through.

  • Patkei

    Lmao. Take a nap. You sound like an moron.

  • a.n. longoria


  • TheWHITEMan

    My question is, where are these people? And why hasn’t someone KILLED them yet? Fraud should carry the death penalty, maybe people wouldn’t be so gung-ho crazy comitting it.

  • William

    In defense of the FCC, the Congress does not give them enough budget to do what they are supposed to do. Citizens Band radio is a prime example of this. In the beginning and up until the 70’s or 80’s a person was required to get a license to operate. After some time people just ignored that requirement and eventually the FCC gave up and no longer required a license because they did not have the resources to track down and punish every wayward CB’er.

  • Pete

    I agree with everything you are saying. No one should be able to call another person and disguise their phone number. There is no legitimate reason for someone to do that.

  • Henry Ross

    Totally agree – this issue is getting out of hand. something has to be done. Either that or I will only take calls that are in my Contacts. The potential ramifications for communications in general could be material.

  • conservativesal

    Useless info. I am getting calls with a caller ID that says it is a neighbor or someone in my town and then it’s the same sing songy female voice trying to sell me something. I am at a loss as to how to stop it.

  • Dety

    Same thing happened to me last night. Probably some bored kids, but none the less, ANNOYING.

    • Tiki Fennell

      It’s very annoying!

  • Tiki Fennell

    Were you able to get this issue resolved, I’m currently going through the same thing, I called Verizon and was told there’s nothing that can be done, except change my number and that’s out of the question, I get atleast 20 or more calls daily from people that are returning my call, it’s been three days now since this Spoofing has begun.

    • Mallory Nieland

      I just got a phone call from my mother saying that a telemarketer called her USING MY PHONE NUMBER. My picture and everything came up which made it look like I was calling. So obviously my mom picked it up. I’ve done some research and have yet to find any useful information to stop this. I can’t believe that this isn’t technically illegal. Today is the first time I’ve heard of this so called “call spoofing”. I’m a Verizon customer so I’ve saved some time there since I’ve seen multiple people post that they were told that there’s nothing to be done. So frustrating! I’m just glad I don’t have angry people calling me saying that I’ve called them!

    • Mallory Nieland

      And who’s to say that If you did change your number that it wouldn’t happen again!?

  • Tiki Fennell

    I read this article thinking that it would be of help to me, I am receiving over 20 calls per day in which they’re returning a call, I DIDN’T call, this is beyond annoying, I never even heard of spoofing until my service provider which is Verizon told me about, along with there’s nothing that can be done besides changing my number, which I cannot do, what an waste of time on this article !

  • Don

    I don’t answer anything, period! Made the big mistake of giving to charities so I get endless calls, email and US mail from all of them. I stopped that for sure. If you want to talk to me, leave a message and MAYBE I will call me.

  • Mike

    I am having the same exact problem. I get calls all the time from local numbers and the line is either dead or its someone saying I called them when I haven’t. This happens nearly every day for the last 6 months without any sign of stopping. If I didn’t need thus phone for business, I would shut it off completely!

  • Carrie L. Kemp

    I get spoof calls day after day. At first, it was the same area code and first three digits to my phone number. Then when I would answer, there was no one on the other end. so I would hang up. Now if I see the first same six digits of my phone number including area code, I just let it ring. If I see a number from another state that I don’t recognize, I let it go to voicemail. If they want me that bad, then they can leave a message. I wish this information on this site would have been more useful, but it does not tell anyone how to protect yourself against such attacks. Pathetic!

  • TheDarkOne

    ANC5P will be launching summer 2018 a free app to unmask any spoof call. App works by as soon as the call comes in but before it’s picked up it’s analyzers the actual number with it’s powerful search engine that the call is coming from. Sort of like reverse engineering. The service will be priced at only $9.95 per month!

<!-- -->