Enable external subdomain for a site branch deploy

[Melvin]

Hi @comvation,

Thanks for the follow-up.

You will need to use 2022.www.unfold-event.ch since as mentioned here:

[Support Guide] How to use Netlify’s branch deploy feature without Netlify DNS

Last reviewed by Netlify Support Staff: August 2023 So - you’ve discovered the concept of branch subdomains and want to use them! But you can’t use Netlify’s DNS Hosting? Never fear, there is a way to do this and this post will explain how in detail! Please note, however, that going this route means missing out on single click setup and all the goodness it includes - for example, getting an SSL certificate configured automatically. We also have Automatic Deploy Subdomains, which allows users …

There are two important considerations:

1. the subdomain must match the branch name (“slugified ” as needed)
2. the subdomain will be under the primary custom domain

This second point means that if your primary custom domain is www.example.com then the subdomain will be branch-name.www.example.com and not branch-name.example.com .

On your site, you have www.unfold-event.ch configured as the Primary domain.