505 Error on Custom Domain After Deployment

I am experiencing a 505 error on my custom domain for a few minutes after pushing new updates to production and completing the deployment. After few minutes, the site returns to normal. This issue occurs only on the custom domain, while the default Vercel domain works without any problems immediately after deployment.

Here’s an overview of my setup:
I purchased the domain from Namecheap.
I created an SSL certificate using AWS Certificate Manager.
I set up a hosted zone in AWS Route 53 and connected the certificate via CNAME. I also pointed Namecheap’s nameservers to AWS Route 53.
Finally, I connected the custom domain on Vercel to AWS Route 53 using CNAME and A records.
Could you please help me investigate why this 505 error occurs and guide me on how to resolve it?

Thank you in advance for your assistance.

Hi @yasseralsaidi. It could be a browser version or cache issue. Does the 505 error happen with all browsers and on all devices?

yes, it happen in all browsers plus i test it in Incognito mode same error!

If you can share the domain, then I can help you investigate the 505 error. If you prefer to investigate on your own and keep the domain secret, then the domain troubleshooting guide can help with common DNS issues.

sorry, the error code is 500

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