how to check how many domains hosted by some ISP's DNS servers?

[Barry Margolin]

In article <94l1ou$7mk at pub3.rc.vix.com>,
Kevin Darcy  <kcd at daimlerchrysler.com> wrote:
>
>There's no way within the DNS protocol to determine this. Feel free to pr=
>opose
>a protocol extension. But, I have to ask, what is the incentive for any
>nameserver to *provide* such information to the public at large? Seems li=
>ke all
>it can do is give potential crackers more information to work with. So ev=
>en if
>the protocol supported it, I doubt many admins would give out that inform=
>ation.

I would expect that there would be an "allow-zone-list" ACL, and paranoid
DNS administrators would only list their secondary servers.  The usual
goal of this is to make it easy to automate updating the named.conf file on
slave servers.

-- 
Barry Margolin, barmar at genuity.net
Genuity, Burlington, MA
*** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to newsgroups.
Please DON'T copy followups to me -- I'll assume it wasn't posted to the group.