On Tue, Sep 07, 2021 at 10:48:57AM -0400,
Matthew Pounsett <m...@conundrum.com> wrote a message of 32 lines which
said:
Yeah, you can pretty reliably get the answer in one or two steps by
requesting the NS set for the FQDN. You'll either get your answer, or
get an SOA with the name of the enclosing zone. Second lookup gets
you the NS set for the enclosing zone.
In message <ytm5xuatw6fkp...@nic.fr>, Stephane Bortzmeyer
<bortzme...@nic.fr> wrote:
Indeed (unless you find a broken resolver that fail to send the SOA).
On 09.09.21 03:20, Ronald F. Guilmette wrote:
I don't want and don't need SOA records. I want and need only the relevant
NS records.
server in some cases send the SOA.
I was thinking of another issue: if the goal of the OP is to find
which domain names are on the same authoritative name servers...
Thank you but no, that was not among my goals.
I just want the names of the final and actual name servers that would /
should respond to the given query.
dig +trace finds those.
Note that some domains can be horribly broken and different nameservers can
send different NS, or no NS at all but SOA.
asking
the NS may not be sufficient, if a name server is known by several
names (for instance, a.nic.sex and a.nic.sucks are the same
machine). So, the OP may have to do a resolution of nameservers' names
into IP addresses, as well.
Thank you. I am well and truly aware of that fact that multiple name
server names may resolve to some single common IP address.
Fortunately, for what I am doing, this fact is not of any relevance.
what exactly is your goal?
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