[▲ Vercel Community](/) · [Categories](/categories) · [Latest](/latest) · [Top](/top) · [Live](/live) [Help](/c/help/9) # Vercel custom domain returns ERR_NAME_NOT_RESOLVED despite valid configuration 15 views · 0 likes · 5 posts contactcosmo3-1323 (@contactcosmo3-1323) · 2026-04-02 ## Problem My custom domain is configured on Vercel with **"Valid Configuration"** shown on both the domain and the project. The Vercel CDN shows as **Active** and the nameservers are set to: - `ns1.vercel-dns.com` - `ns2.vercel-dns.com` However, the browser returns: > **Error: ERR_NAME_NOT_RESOLVED** The `.vercel.app` deployment URL works fine. ## What I've Tried 1. Reassigned the domain to the project multiple times 2. Reset and re-added DNS records 3. Waited 22+ hours for propagation Has anyone had this issue? system (@system) · 2026-04-02 The domain troubleshooting guide can help with most custom domain configuration issues. You might be able to use that guide to solve it before a human is available to help you. Then you can come back here and share the answer for [bonus points](https://community.vercel.com/t/introducing-the-vercel-leaderboard/1358). https://vercel.com/docs/projects/domains/troubleshooting You can also use [v0](https://v0.dev/) to narrow down the possibilities. contactcosmo3-1323 (@contactcosmo3-1323) · 2026-04-02 Current DNS records: * www CNAME cname.vercel-dns.com. * @ A 216.198.79.1 * api CNAME nothing.up.railway.app. Pauline P. Narvas (@pawlean) · 2026-04-02 What’s the URL? Sharing this here in case it’s related / helpful https://www.reddit.com/r/nextjs/s/wHk3xT4TZ9 Pauline P. Narvas (@pawlean) · 2026-04-06 I'm sorry I don't understand what you mean. Do you have a link to your website?