By default we provide a subdomain under which Nextcloud is available. However, you are free to use your own domain like
# Name Type Value <YOUR-DOMAIN> IN CNAME <OUR-SERVER> <YOUR-DOMAIN> IN TXT v=spf1 mx include:opsdata.ch -all
Please contact us so that we can prepare everything on the server side.
HTTPS Certificate: We use Let’s Encrypt and issue a new certificate for your domain.