# How to Block Callers

## Overview

Should you find yourself receiving calls from unwanted callers, telemarketers or politicians. Retreaver can help you permanently block them from getting through.

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## Block callers as they come in

Go to your [Call Log](https://retreaver.com/calls) in the menu, find the call record or Caller ID that you want to block, and click on the UUID.

 Then click Block Caller.

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## Preemptively block callers

If you have a list of known caller IDs to block, your can add them before they call.

Go to Settings, then [Company](https://retreaver.com/company).

Click on Suppressed Numbers in the Special Number Lists section.

Click on **\+ New Suppressed Number** to add one-by-one, making sure to uncheck **Allow Resubscribe** if you want to permanently block them.

You may also click **Upload Suppressed Numbers** to upload a document that contains a single column with one number per line is all that is required for the upload file.