How to Find Out Who Is Calling You from an Unknown Number

Tired of calls from unknown numbers? Discover how to identify and block them with our complete guide.

Published on Jan 04, 2026
Updated on Jan 05, 2026
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In Brief (TL;DR)

Finding out who is calling you from an unknown number is possible thanks to online services, smartphone apps, and alternative strategies.

The choice of tool depends on your needs and preferences.

Blocking unwanted numbers is a definitive solution to protect yourself from annoying calls.

The devil is in the details. 👇 Keep reading to discover the critical steps and practical tips to avoid mistakes.

The annoyance of receiving calls from unknown numbers is a common problem. But how do you find out who is calling you? This article will provide you with effective methods and useful tools to identify the unknown numbers that are disturbing you. You will learn how to use apps, online services, and strategies to unmask unwanted callers. Continue reading to discover how to protect your privacy and reveal the identity behind those annoying unknown numbers.

Person annoyed by a call from an unknown number
Discover how to identify unknown numbers and protect yourself from unwanted calls.

Online Services to Identify Unknown Numbers

How to find out who is calling you using online services? There are several platforms that offer the ability to enter an unknown number and obtain information about the owner. These services, often based on databases of user reports, can reveal if the number is associated with telemarketing, spam, or potential scams. Some online services also offer the ability to block unwanted unknown numbers.

Let’s explore some of the most popular online services for identifying unknown numbers:

  • Tellows: This free service allows you to enter the unknown number and view comments and ratings from other users who have received calls from the same number. Thanks to this information, it is possible to understand if it is a call center, a company, or a private individual. Tellows offers a wide range of details, including the type of call (telemarketing, survey, etc.) and the caller’s reputation.
  • Chi Chiama?: Similar to Tellows, Chi Chiama? is a free service that collects user reports on unknown numbers. In addition to viewing comments and ratings, it is also possible to report a new number and contribute to the community. The site also offers the ability to block calls coming from unwanted numbers.
  • White Pages: Although traditionally used to find landline numbers, White Pages can also be useful for identifying some unknown mobile numbers. The service allows you to enter the number and view the associated name, if present in the database.

How to choose the right online service? The choice of the online service depends on your needs and preferences. Tellows and Chi Chiama? are excellent for identifying telemarketing numbers and potential scams, while White Pages is more useful for finding numbers of private individuals. It is advisable to try different services and compare the results to obtain more complete information.

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Smartphone Apps: A Powerful Weapon Against Unknown Numbers

How to Find Out Who Is Calling You from an Unknown Number - Summary Infographic
Summary infographic of the article "How to Find Out Who Is Calling You from an Unknown Number"

Smartphone apps offer a convenient and immediate solution to find out who is calling you from an unknown number. These apps leverage databases of reported numbers and caller identification technologies to provide detailed information about the number’s owner. Some apps also allow you to automatically block calls from unwanted numbers, protecting you from spam and aggressive telemarketing.

Let’s look at some of the most effective smartphone apps for identifying unknown numbers:

  • Truecaller: One of the most popular and comprehensive apps for identifying and blocking unwanted calls. Truecaller has a vast database of numbers reported by users worldwide, allowing you to quickly identify unknown numbers and view caller information, such as name, location, and type of business (if available).
  • Whoscall: Another effective app for identifying unknown numbers and blocking spam calls. Whoscall offers an intuitive interface and advanced features, such as the ability to customize blocklists and receive real-time notifications about unwanted calls.
  • Hiya: Hiya focuses on identifying spam calls and automatically blocking unwanted numbers. The app also offers the ability to report new spam numbers and contribute to the community. Hiya is a reliable option for those who want to protect themselves from unwanted calls without having to manually check every number.

How to choose the right app? The choice of the smartphone app depends on your needs and your device’s operating system. Truecaller and Whoscall are available for both Android and iOS, while Hiya is available only for Android. It is advisable to try different apps and choose the one that offers the most useful features and an intuitive interface.

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Alternative Strategies to Find Out Who Is Calling You

Smartphone receiving a call from an unknown number with security icons on the screen
There are effective methods to unveil the identity of who is calling with an unknown or anonymous number.

In addition to online services and smartphone apps, there are some alternative strategies that can help you find out who is calling you from an unknown number:

  • Reverse Google Search: By entering the unknown number into the Google search bar, you might find information about the number’s owner. This method is particularly useful if the number is associated with a business or an online profile.
  • Check Social Media: If you suspect the unknown number belongs to someone you know, try searching for it on social media. Many platforms allow you to search for users by phone number.
  • Answer the Call with Caution: If you decide to answer a call from an unknown number, do so with caution. Do not provide personal information and try to get as many details as possible about the caller. If the call seems suspicious, end the conversation.
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Comparative Table: Online Services and Apps to Identify Unknown Numbers

ToolTypeMain FeaturesProsCons
TellowsOnline ServiceNumber search, user comments, reputation ratingFree, large databaseDepends on user reports
Chi Chiama?Online ServiceNumber search, user comments, number reportingFree, active communityDepends on user reports
White PagesOnline ServiceNumber search, name associationEasy to useLimited to landlines and some mobile phones
TruecallerSmartphone AppCaller ID, spam call blocking, global databaseLarge database, advanced featuresRequires registration
WhoscallSmartphone AppCaller ID, spam call blocking, intuitive interfaceEasy to use, customizableLimited database availability
HiyaSmartphone AppSpam call identification, automatic blocking, number reportingFocus on spam protectionAvailable only for Android

Blocking Unwanted Numbers: A Definitive Solution

After identifying an unknown number as unwanted, you can block it to avoid future calls. Most smartphones offer the call blocking feature directly from the phone settings. Additionally, many smartphone apps for caller identification offer the ability to automatically block spam numbers and numbers reported by users. Blocking unwanted numbers is an effective solution to protect your privacy and reduce the number of annoying calls.

Conclusions

disegno di un ragazzo seduto a gambe incrociate con un laptop sulle gambe che trae le conclusioni di tutto quello che si è scritto finora

Receiving calls from unknown numbers can be frustrating and worrying. Fortunately, there are several solutions to identify these numbers and protect your privacy. Online services like Tellows and Chi Chiama? offer a quick and free way to check the reputation of an unknown number, while smartphone apps like Truecaller and Whoscall provide a more comprehensive experience, with advanced caller identification and call blocking features. By using these tools and the alternative strategies described in this article, you can find out who is calling you and make informed decisions on how to handle unwanted calls. Remember that security and privacy are paramount, so it is important to use these tools responsibly and protect your personal information.

Frequently Asked Questions

disegno di un ragazzo seduto con nuvolette di testo con dentro la parola FAQ
How can I block an unknown number on my iPhone?

Open the Phone app, go to the Recents section, tap the «i» icon next to the number you want to block, and select «Block this Caller».

How can I know if an unknown number is a scam?

If the number calls you insistently, asks for personal information, or offers you deals that are too good to be true, it might be a scam.

Is it safe to use apps to identify unknown numbers?

Most apps for identifying unknown numbers are safe to use, but it is important to read the privacy policies carefully before installing them.

What can I do if I continue to receive calls from unwanted unknown numbers?

If you continue to receive unwanted calls, you can report the number to your phone carrier or the competent authorities.

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