How to know who is an unknown caller

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Bernard Perron
@bernardperron
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If you frequently receive unwanted calls from unwanted numbers, you are probably frustrated and looking for ways to put an end to them.

Unfortunately, since you don't know what this number looks like, you can't block it. So what are your options?

This article will show you everything you need to know to find out who this unknown caller is.

How do callers hide their phone number?

First, how do these people hide their phone numbers when they call you?



Anyone can hide their number with the No Caller ID feature. When you make this type of call, you appear as an unknown caller. Just enter a few numbers.

Enter *67 before the number you want to call. This action will automatically block your caller ID.

The No Caller ID feature is typically used to prevent tracking. However, some misuse it for harassment and other illegal activities. This is why you must learn how to unmask the caller's number.

The next section will show you how you can do this.

How to know who is an unknown caller

Finding out who an unknown caller is can help you block them and stop receiving unwanted calls from them.

Let's take a look at the different methods you can use to do this.

Call your phone company

Since telephone companies have records of your previous calls, they usually provide their customers with an anonymous caller ID service.

So how does it work?


This service automatically checks the authenticity of each call you receive on your phone.


Suppose someone tries to call you from an unknown or restricted number while this service is active. In order for the caller to continue, he will have to unmask his number. Call your telephone company, inform them that you are receiving unwanted calls from an unknown number and activate this service.

Unfortunately, not all companies offer this service, but the only way to be sure is to call your provider and ask them about anonymous caller ID. If your carrier supports the feature, the carrier will ask you for the date and time you received these calls. Also, they might need to know your name and address.

After that, the operator will try to unmask the number calling you and should activate the feature.

Use TrapCall

TrapCall is one of the most trusted services that people use to unmask and block unknown numbers.

The TrapCall application allows its users to:

  • Unmask any phone number.
  • Unmask a caller's name, address and photo with the No Caller ID option enabled.
  • Blacklist these numbers, so that when they call again, they hear a message telling them that your number has been disconnected or is not in service.
  • Use automatic blocking of unwanted calls.
  • Use recording of incoming calls.

All you have to do to use TrapCall is to subscribe to it by registering on their official website. After that, they will ask you to activate the service on your mobile phone. The process usually takes about 5 minutes and is simple to complete.



After configuring TrapCall, when you receive a call without caller ID, you must reject it. After that, TrapCall redirects the number to its system, then unmasks the caller and sends you a notification with the exact number and additional information.

TrapCall works on Android and iPhone smartphones. Unfortunately, this service is not available anywhere outside the United States of America.

TrapCall offers a free trial option. You can test it by registering here.

Block unwanted calls

Fortunately, cell phone makers have made it easy to block unknown callers.

To iPhone (iOS 13 or later):

  1. Go to “Settings. »
  2. Scroll down and press “Phone. »
  3. To toggle “Silence from unknown callers” désactivé

For Android:

  1. Open the "Dialer" on your Android device.
  2. Press the "vertical ellipsis" (three vertical dots) menu on the right side of the application.
  3. Select “Settings. »
  4. Tap “Block numbers. »
  5. To toggle “Block unknown callers” ouch

Block specific numbers

Once you find the number of an unknown caller, you can block them easily using your smartphone features.


Block specific numbers on iPhone:

Apple iPhone users can easily block calls by following these instructions:

  1. Open the "dialer" on your iPhone and scroll to the number you want to block.
  2. Press the " Yippee " surrounded by a circle to the right of the number.
  3. Scroll down and choose “Block caller”.

Once that happens, the caller will only get a message that you don't accept calls or something of that nature.


For android:

Android instructions vary by brand, model, and software version, but the instructions should be fairly similar for most phones. Open the dialer on your Android and follow these steps to block callers:

  1. Press the "telephone number" located in the "Recents" tab of your call log.
  2. Click it " Yippee " with a circle around.
  3. Tap " To block " at the bottom of the screen.
  4. Select " To confirm. »

Although you have blocked the number calling, the user of that number will never know. They will receive a message similar to a disconnected phone.

Frequently Asked Questions

Can my telephone company tell me who the unknown caller is?

Unfortunately no. Whether it's your mobile carrier or your landline carrier, you can't get this information from a carrier because they don't track unknown callers.

Are unknown calls dangerous?

While most phone calls you receive are benign and nothing more than a nuisance, you should be wary of unknown calls. Of course, you shouldn't answer these calls at all. This is caused by scammers, and the number you can't see may be from an international area, which means your carrier will charge you high fees to answer.

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