Main domain with CloudFlare, delegate sub domain to another DNS server

Hi, I am new to Cloudflare and helping a customer get their site protected.

They are working with a 3rd party on this site, and currently, a sub domain is fully delegated to this 3rd parties control.

Once this domain’s DNS is being managed by Cloudflare is there a way to delegate this in the same way as they have setup today?

I spoke to Cloudflare sales and they say there is a way, but I need to submit a support case to get this documentation, this is the only place I can find to do this.


  • Create a NS record: subdomain to
  • Create an A record: ns1 to of your nameserver

root domain:
Subdomain to delegate: donald
Name server IP: 123.456.789.1



You can add more delegated zones later by adding NS records for Daisy, Dagobert…

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