--- title: "CloudFlare Blocking Catchpoint Tests" slug: "cloudflare-blocking-catchpoint-tests" updated: 2023-01-06T15:49:51Z published: 2023-01-06T15:49:51Z canonical: "docs.catchpoint.com/cloudflare-blocking-catchpoint-tests" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.catchpoint.com/llms.txt > Use this file to discover all available pages before exploring further. # CloudFlare Blocking Catchpoint Tests ## Overview When running Catchpoint tests for webpages that are hosted on Cloudflare, you might come across a situation where you receive a **Server responded with a 40X or 50X response code** error, even though you are able to access the page from your local system without any issue.   If you check the screenshot from a failed test run, you might see the message shown below. ![](https://cdn.document360.io/cb4af8f9-6751-4fd2-b39c-07aae832badb/Images/Documentation/360004635791-mceclip0.png) ## Explanation This happens because CloudFlare detects the traffic from Catchpoint nodes as bots and denies it from serving the request. To mitigate this, it is recommended to whitelist the IPs of the Catchpoint’s nodes from which the tests are being run for uninterrupted testing.  ## See also To know more about Whitelisting the IPs at CloudFlare, please visit the CloudFlare’s blog: CloudFlare Threat Control: Making your website safer