Secondary DNS


I moved my server to a new company and they have a feature named “Secondary DNS”. Here is their explanation:

If you host primary dns, you can use second dns hsoted by Online, you have to allow ip secondary dns ( and add your domain name on your Online Console clicking on secondary dns on the menu.

After 24 hours, you can use dns: (your server)

I have only french documentation for the moment.

So i can use as my secondary DNS server but is it possible to use custom domain for secondary DNS like ?