Sometimes, our bot: AhrefsBot might be blocked by the Cloudflare Firewall preventing it from crawling the website.
Note: If the error doesn't explicitly mention "Cloudflare", do note that the block could be set by a different entity (e.g. your domain host provider).
If you want to lift this restriction, follow the steps below.
Log in to Cloudflare account
Enter our IP ranges separated by comma, change Action to "Allow" and click the Add button:
The above tips should work for most websites with a generic setup. If it does not work for you, please contact Cloudflare Support.