A reverse phone lookup is essentially the act of retrieving background information about a caller just by using the number they dialed. This information will typically include their name, email address, social media accounts, and the city they reside in, and in some cases, it can even cover more sensitive data, like their credit scores, home addresses, etc.

However, the real challenge with conducting a reverse lookup is that there are several online platforms that offer these services, and some of them may be looking to steal your personal information. On top of that, some premium sites may require you to make a payment but may still be unable to provide you with the information you’re paying for.

It is for this reason that we put together this list of free reverse phone number lookup sites that you can take full advantage of.

1. US Phone Search – Linked to numerous public databases and online directories

2. NumLooker – Offers access to an extensive search engine database

3. TheNumberLookup – Ensures 100% user privacy on all searches

4. US Phone Lookup – Provides an extremely easy-to-use reverse search platform

1. US Phone Search

The reason US Phone Search stands at the top of this list is the fact that it is connected to a number of public and federal databases, as well as cell phone carriers and data bank sites, which means that it is able to return accurate number lookup results such as the target’s name, address information, location history, social media accounts, and more, in a matter of minutes, regardless of whether that person is using a mobile phone, landline, or VOIP.

It also makes it easy to filter through the search results in order to find the relevant information you need. Aside from that, you can also conduct an address lookup, a people search, or even a public records search in the event that you lack the person’s phone number to start your search.

The only issue with this platform is that it is limited to conducting US-based searches, which means that it is unlikely to generate background results for international numbers.


  • Provides detailed background results on unknown callers
  • Allows you to filter background search results for easier review
  • Offers multiple search options


  • Unable to generate background information on international numbers

Identify any unknown callers instantly with US Phone Search!

2. NumLooker

NumLooker is a reliable phone number lookup service that allows you to instantly trace any unknown number and determine who is behind it, which aside from their name also includes their email address, criminal records, social accounts, and more.

However, what makes NumLooker so good is the fact that it also offers certain advanced features, like the ability to filter out irrelevant profiles. On top of that, the user interface is easy to navigate, and it can be used on any device, including tablets and mobile phones.

Furthermore, it also comes with an excellent customer service team and even allows you to opt in to be notified whenever an individual’s report is updated. Plus, the website also allows you to conduct searches based on other parameters, such as address lookup, email lookup, and even people search.


  • Provides accurate and up-to-date information
  • Maintains confidentiality by not storing any information on searched numbers
  • Offers a simple user-interface


  • Search engine can sometimes take longer to produce results

Implement a quick reverse phone number search via Numlooker now!

3. TheNumberLookup

TheNumberLookup is a highly-reliable phone number lookup platform with a strong reputation for making it easy for users to quickly identify any unknown numbers that may be incessantly calling them, as well as any relevant details tied to them like their name, addresses, social accounts, business information, and more.

The service also does well to produce extensive background reports, given the fact that its search engine makes use of different algorithms to retrieve information online. For instance, if they happen to own any publicly registered entities, this search tool will generate all the relevant information it can gather on their business.

The platform is also completely free to use, and you don’t have to wait very long for the tool to produce results on the number either. However, the search engine is still new, which means that it has a limited database that may not always generate results, especially if the target doesn’t have a sizable digital footprint.


  • Highly reliable search engine that is accessible 24/7
  • Free to use platform with no hidden charges
  • Offers speedy search results on unknown callers


  • Has a limited search database

Take advantage of TheNumberLookup to uncover who your unknown caller is!

4. US Phone Lookup

US Phone Lookup is a free reverse phone lookup tool that makes it extremely easy to collect detailed background information on any unknown caller, such as email addresses, residential addresses, and more, without having to pay any fees and without any trace.

All background checks come from publicly available sources such as phone directories, online listings, social media profiles, and more. The platform can also generate a caller’s criminal records or employment history by scanning government databases as well.

Furthermore, US Phone Lookup’s interface is very easy to use, and given that its database is updated regularly, this makes it a great choice for those looking to quickly gather basic information on a number without any hassle or delay.

You can also carry out different background searches, such as people searches, address lookups, and even searches of public records. Plus, the service also guarantees complete confidentiality for all users by using high-end encryption protocols to keep any reverse number search completely anonymous.


  • Offers free background searches
  • Provides accurate search results
  • Facilitates multiple search parameters


  • Limited to US background searches only

Get accurate number search results by using US Phone Lookup now!

5. What Is This Number

When it comes to accurate background results, What Is This Number is one of the best options on this list, purely because, unlike most other search tools, it focuses only on providing a number lookup service.

This in turn means that the company invested more effort into providing its users with a search engine that utilizes cutting-edge search technology to scan hundreds of thousands of online datasets and public records in order to provide both detailed and comprehensive background reports on unknown callers that may be using cell phones, landlines, VOIP, or even toll-free numbers.

Aside from that, the service is 100% free, thereby making it easy for you to conduct as many reverse phone lookups as you need, with each search carried out both securely and anonymously. However, it is important to keep in mind that the service cannot guarantee that all search results will be 100% accurate.


  • Facilitates free background searches
  • Provides detailed and comprehensive background reports
  • Offers multiple reverse search parameters


  • Can only guarantee 80% accuracy on all searches

Carry out a free reverse number search through What Is This Number!

6. PhoneNumberLookupFree

PhoneNumberLookupFree allows you to easily identify the owner of an unknown number by scanning your search results through thousands of public records and databases.

This in turn means that any information that is directly or indirectly tied to the number will be presented to you in detail, such as their contact details, address, employment history, criminal background, and also financial information such as their estimated income.

It also boasts an extremely fast search engine, which means that it can effectively return any relevant information on your target within seconds, with the added benefit of being able to filter out the search results to extract the precise information you need.

And since the company guarantees its users’ complete privacy, the target will never find out that you were digging up information on them either.


  • Ensures complete user confidentiality
  • Collects any information on a target and compiles it for easy perusal
  • Has a quick and efficient search engine


  • Can generate irrelevant search data at times

Discover who keeps calling you with PhoneNumberLookupFree today!

7. NumberLookup

NumberLookup simplifies the number lookup process by connecting to multiple phone directories and online archives in order to generate as much information on a caller as possible. And given that the platform’s database is regularly updated with new information, this ensures that you don’t end up missing out on anything new about the caller.

The user interface is also fairly straightforward, as within minutes, the search engine produces a list of relevant matches that are summarized into a comprehensive report.

Alternatively, you can also conduct a reverse address lookup, public records search, or background check on the target if you do not happen to have their phone number to get the search started. The only downside of this search tool is that it is limited in its level of reach as compared to some of the other options on this list.


  • Has an easy-to-use interface
  • Compiles any relevant data into a convenient background report
  • Provides several alternative search options


  • Has a limited search database

Verify the true identity of any unknown caller via NumberLookup now!

8. Who Call Me

Who Call Me allows you to trace any unknown callers through a fast and streamlined process that only requires you to input their number, leaving the platform to pull information on the caller from multiple online databases in a matter of seconds.

You can also use the platform’s address lookup, email lookup, and background check options if you have limited information to start with on a target. On top of that, all searches on the site are 100% confidential, the UI is easy to navigate, and it is also mobile-optimized, thereby making it a good choice for carrying out searches remotely at any time or place.

Plus, you can also contact their customer service team at any time 24/7, if you are ever in need of assistance or have an inquiry about a search you’ve conducted.


  • Keeps all searches private
  • Has a reliable customer service team
  • Offers different background search parameters


  • It is not the fastest search tool on this list

Deduce whoever it is that keeps calling you with Let Who Call Me!

9. Whose Number

Whose Number is a great choice for those who may have been dealing with annoying calls from unknown users and are looking for a quick way to identify and block them permanently.

With this free reverse phone lookup tool, you can type in a number, and the search engine will instantly scan online databases and public directories to retrieve the identity behind the number, whether it be an individual or a company.

This in turn makes it easy for you to block or report the responsible party to the relevant authorities in the event that they have been incessantly pestering you.

And while this option is not as detailed as some of the top phone lookup services on this list, Whose Number is a good choice to clarify some basic details about a contact without alerting them or paying any fees for the information. Plus, the entire process is extremely simple and efficient, as all you need to do is input the target’s name and wait for the results to be generated almost instantly.


  • Simple and easy-to-use interface
  • The service is completely free
  • Search results are generated almost instantaneously


  • Only provides basic information on a target

Gather quick insight into any unknown number using Whose Number!

10. CocoFinder

CocoFinder is a great phone lookup tool that comes with a user interface that is both low-profile and precise. This, in turn, means that there is no excessive clutter or unnecessary distractions, thereby making the navigation process both effortless and fairly clear.

The platform is also completely free to use and allows you to conduct a phone number search or even a background check into a caller’s criminal, employment, and address histories. On top of that, CocoFinder offers users a unique advanced filtering feature that allows them to narrow down their search.

The site is also well-optimized for mobile use, and since the search engine uses next-generation search technology, this ensures that you are able to get the results you need in just a matter of minutes.


  • Loaded with numerous search features
  • Very accurate search engine
  • Easy to use interface
  • Highly secure and confidential platform


  • Can be slow to generate results at times

Use CocoFinder to check this phone number now!


With the internet allowing people to access public documents and other sources of information in a matter of seconds, it has never been easier to take on the role of a private investigator. And with the help of reverse phone lookup tools, you can get rid of any anxiety that you may be dealing with from unknown callers with just a few clicks.

In this respect, we would recommend using the top 4 options on this list, but do keep in mind that all 10 websites mentioned above have something to offer in terms of background results, features, and more.

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