Add the domain to the correct Vercel project and use its generated DNS target.
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Add the domain
In Vercel, open the intended project, Settings and Domains, then add the complete .ch hostname.
Add both root and www if you want one to redirect to the other.
Copy the A, CNAME or verification record Vercel displays for each hostname; values can be project-specific.
Point and check
Create those records in olu and remove only conflicting website records.
Return to Vercel until each domain shows Valid Configuration, then choose the redirect direction.
Wait for the certificate and test the production deployment on both hostnames.
Frequently asked questions
Why does Vercel ask for a TXT record?
It may require ownership verification when the domain was linked elsewhere. Add the exact, unique TXT value shown for your project; do not reuse another project’s value.