Custom domain returns 404 error while .vercel.app domain works correctly

Help
,
1

Hi everyone,

I’m experiencing an issue with my custom domain configuration and could use some help. My Vercel deployment works perfectly on the default domain, but returns a generic server error on my custom domains.

Problem

When accessing my custom domains (vocdive.com or www.vocdive.com), I get this error:

Not Found
The requested URL was not found on this server.

However, when I access the project via the Vercel domain (voc-data.vercel.app), the site loads perfectly.

Project Details

  • Framework: Next.js 16
  • Project: voc-data
  • Custom domains: vocdive.com and www.vocdive.com
  • Vercel domain (working): voc-data.vercel.app

What I’ve Verified

  • Both custom domains are properly added and verified in my project settings
  • DNS is correctly configured (CNAME pointing to Vercel)
  • SSL certificate is valid and issued
  • Domain passes all Vercel domain checks (DNS, certificate, nameservers)
  • DNS provider confirms everything is configured correctly on their end
  • Latest deployment is in READY state and set as production
  • Issue persists in incognito mode and across different browsers

This appears to be a routing issue on Vercel’s infrastructure side, as the domain resolves to Vercel but isn’t routing to my deployment. Any help would be greatly appreciated!

2

There’s another community post with 404 debugging tips that might be helpful. Please give these solutions a try and let us know how it goes.

A human should be around soon to offer more advice. But you can also get helpful information quickly by asking v0.

6

Looks like it works now. Can you confirm?

7

yes, all is working now, thank you! I guess it took some time to fully propagate.

1 Like
8

Many such cases. Thanks for coming back to tell us it’s working!