My CNAME target domain is hosted on a different DNS provider. What should I verify on their end?

Ensure the target domain's DNS records are correctly configured and resolving properly *outside* of Cloudflare. Use a DNS lookup tool (like `dig` or `nslookup`) to verify the target domain's A record (or other relevant record) resolves to the correct IP address. If the target domain isn't resolving correctly on its own, fix that first before troubleshooting Cloudflare.