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We're moving dns servers (managed with bind) for our main domain (let's call it to new servers. Since we're having some issues to update glue records with current registrar we thought to change authoritative dns servers to another domain (that we directly manage)

Current setup is

dig -t ns
;; ANSWER SECTION:       140 IN  NS       140 IN  NS

We don't directly manage glue records for and, so we'd like to change in this way

dig -t ns
;; ANSWER SECTION:       140 IN  NS       140 IN  NS

in order to manage better A records for and

However currently and are not authoritative dns for zone and my registrar doesn't allow me to do the change for this reason.

Is this a strict requirement for DNS delegation?

Or in other words must and be authoritative for zone in order to be authoritative also for

More details

When I tried to insert in the control panel for (provided by registrar) I got an error saying that " could not be added as nameserver for". I opened a ticket with my reseller (it's an Enom reseller account) which in turn has forwarded the question to Enom and here is their answer:

Enom told me that the DNS servers "" and "" must be registered in your registrar as name servers. Once you do that, either you or us can update the DNS servers for the domain

share|improve this question
No, it's not necessary. Please provide the exact verbiage you received from your registrar, as you might be mis-interpreting the context of the "authority" they're discussing. – Andrew B Jun 6 '13 at 23:01
@AndrewB I've posted the answer they gave me. By reading the answer carefully I say that they don't talk about authoritative, maybe you're right... By the way I've used as authoritative for subdomains of with no issues since I manage the SOA for those subzones. – Fabio Jun 7 '13 at 10:29

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