How to find Out Who Called with a Private Number (Caller Id Spoofing)

You are probably familiar with the annoyance of getting a call from what seems to be an unknown number. You can’t tell who it is, and you’re left wondering why someone would bother calling if they don’t want you to know their identity. If this has happened to you before, then read on for some tips on how to find out who called with a private number (no caller ID).

Finding the person behind a private phone number 

You can discover who called you with a private number by using the device that you already have at home: the telephone. The system is very easy to follow, and here’s how it goes:

Caller ID services are usually offered through your phone service provider. These services send to your phone call information about incoming calls that come from a private or unknown number (usually listed in caller id as “unknown”). However, if the person tries to hide their identity by blocking his/her caller id, then this won’t work anymore.

Step 1: Let the number show up on your phone

If you’re getting a call from an unknown caller, then ignore the first few seconds of the call. Let the number show up on your phone’s recipient screen. How can you do that? Well, if you are using an analog phone system (PSTN), then simply silence your phone by pressing the *6 key. Make sure to wait for at least 30 seconds before hanging up or hitting # to avoid disconnecting the line

Step 2: Cold Call Back

Call back immediately after receiving your mystery call (do not hang up yet). The reason why this works is because some telephone networks take time before they update their information about either missed calls or blocked numbers; during that time period, it might still be possible to identify the person behind a blocked or private number. Be sure to hang up before you get a second call, as this will disconnect the line and will make it impossible for you to find who called from a private number.

If you use a voice-over internet protocol (VoIP) system, then just wait until someone calls you back. It works pretty much similarly, except that you have to wait longer since there is no analog network involved with VoIP systems.

Step 3: Search on Google

Locating an identity is quite easy these days; all it takes is one simple search on Google using the phone number listed on your caller id service. All of the information about calls made to your phone are stored in databases maintained by companies providing the caller id services.

The information shown on Google will include the name and address of the owner, as well as any additional information that you can find in these databases (such as aliases or other phone numbers). Note that this might not work if someone used a spoofed number instead of blocking his/her identity; however, this is quite rare and almost impossible to do without hiring a professional.

How much it costs: It does not cost anything to make a call back and search online using Google and other similar websites (e.g., Whitepages). If you use VoIP, there is no need to pay for making calls from your computer or virtual phone system.

Step 4: Keep Track of Private Numbers

If you live in an area where most people know each other, then you might want to keep track of unknown numbers that called you. This is quite easy to do with Google Voice, which can save notes about phone calls made to your home or business phone.

You just have to create a new contact for the number and add information such as when it was called and what phone line it used. That way, you’ll always be able to find out who called even if they blocked their number or used spoofed caller id services. You’ll also be able to identify any telemarketers by keeping track of every time they call using the Notes feature on Google Voice.

Note: If an individual uses a VoIP system instead of a traditional phone service provider, then the process is pretty much the same. You can still create a separate contact in your phone or Google Voice for every number that contacted you, and you’ll always be able to identify them by checking their notes (e.g., when they called, what was said, etc).

Even if you cannot find out who made the call from a private or blocked number, at least it will help you figure out which one of your friends might have done this on purpose. Even though some people do this just to prank others, there are also some cases where an ex-boyfriend/girlfriend gets revenge by harassing his/her ex over the phone using a blocked caller id service.

Finding out who a person really is behind a Caller ID Blocked is indeed possible if you follow the above steps. However, this process can be a bit overwhelming for those who are not familiar with Google and other search engines. In any case, it’s always better to be safe than sorry; therefore, if you ever receive a strange phone call from someone whom you don’t know at all, then you should immediately contact your local authorities and let them investigate about it.

If they find out who the person behind that mystery call really is and why he/she called, then they might help you with filing a harassment or stalking report against him/her so everyone else knows what happened as well. Victims of such crimes face several issues in their lives after such incidents occur (e.g., difficulty finding new jobs, etc). So, it’s best to get rid of these people who are out there just to frighten others by taking some action against them before they become a serious threat.


To summarize the above, Caller ID Blocking is one of the most common features that almost all telephone companies provide today to their customers. However, this feature also has its drawbacks because you cannot identify telemarketers or other suspicious callers who have private numbers. These days, there are several ways in which you can find out who made calls using spoofed/blocked caller ids (e.g., Google Voice) but still it becomes pretty difficult if he/she uses VoIP for making the calls instead of traditional phone lines provided by traditional telephone companies.

So, what do you think about all of this? As always, feel free to leave your feedback and/or questions in the comments section below. I’ll be glad to answer them!

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