Bing webmaster not indexing my Cloudflare pages site

For Workes & Pages, what is the name of the domain?

What is the error message?

We were not able to connect to the DNS (Domain Name Server) for this URL. Please review with your technical team and web hosting company, and contact Bing Webmaster support if you are not able to fix the issue.

What is the issue or error you’re encountering

Submitted sitemap to Bing but they are saying website cannot be crawled and indexed.

What steps have you taken to resolve the issue?

Have attempted to look for security analytics to look for bingbot requests and set up custom rules to allow. But this appears to be only business/pro customer feature

Just to add, it’s a custom domain - “” not a “* domain”