You can add your domain to Explore portfolio as a main Domain or Sub-Domain.
If you want to add your domain or sub-domain to Explore portfolio go to your domain registrar website, open the DNS settings and add these settings:
Name (Host): @
Name (Host): your-sub-domain
If you’re not sure whether you’ll need certain A, AAAA, or CNAME records for your domain, it’s a good idea to remove them now. This will give you a clean slate to work with and prevent any potential conflicts or issues. It’s also a good idea to make a backup of your existing records in case you need to refer to them later.
If you use an email service with your custom domain, such as G Suite, be sure not to delete any MX records associated with it.