Frequently Asked Questions

The service was created in 2011 in the Czech Republic. It is an online forum where the users can share their experience with phone numbers, both annoying (mostly telemarketing, surveys) and useful (e.g. couriers, offices)..

Since the beginning, the service has been received very well, which led to localization into more languages. Nowadays, the forum exists in more than 20 languages and 34 countries throughout the world.

The service is intended for anyone who wants to identify the owner of an unknown phone number. The creators of the forum have also recently created the mobile app Call Insider for Android phones. This app, which is connected to the database of the website call-reverse-lookup.com, also allows users to automatically block telemarketing numbers.

The phone number database and ratings are created by the users themselves. They can add their reviews either through the website or through the Call Insider app.

Comments are posted by the users of the website anonymously, so it is not possible to ensure their 100% trustworthiness. We, of course, get requests to remove comments on phone numbers stating that they are a tool of competition and they have been fabricated. We, therefore, reserve the right to delete comments or even disable comments for a particular number.

Every user can deactivate any comment until the moderators deal with it. Just click the bin icon in the bottom right corner, fill in a short form and confirm the email address where a statement on how the moderators dealt with the comment will be sent.

We edit and delete comments for the following reasons:

• We are informed that the comment contains signs of illegal actions and these actions can be determined on the basis of general awareness.
• We are informed that a given comment contains personal data according to the General Data Protection Regulation (GDPR).
• We are notified that the comment is vulgar or abusive.
• We receive a request from the police to take the comment down.
• We receive a court order to take the comment down.

In case a comment contains derogatory language or claims that can generally be regarded as lies, inform us via email at call-reverse-lookup.com@ or by mail at our address:

In case it is obvious that a given comment is not true or is derogatory, it will be removed. In other cases, contact the police who have to investigate whether the comments are illegal. The forum operator will fully cooperate in such an investigation. As soon as the police or a court confirms their illegality, we will be able to remove the comments.

Adding comments does not require a registration. Comments are added by the site visitors completely anonymously – we do not require a name or an email address.

We do not save readable IP addresses of posters either, only encrypted. We are, therefore, able to determine that for instance two comments were sent from the same device, but we are unable to provide a readable IP address.

If you find out that your phone number is shown on this website, you can ask us to remove it using our email or mailing address.

We reserve the right to ask you to provide documents proving that you are the owner of the phone number.

If we have deemed a request to remove a comment unsubstantiated, we do not allow repeated reporting of the same comment until a time limit passes. If you insist it should be removed, you can contact us at our email address call-reverse-lookup.com@ or by mail at: