Strange DNS resolving behavior

Barry Margolin barmar at alum.mit.edu
Wed Apr 21 19:26:58 UTC 2004


In article <c66993$l6f$1 at sf1.isc.org>,
 Simon Waters <Simon at wretched.demon.co.uk> wrote:

> John Manly wrote:
> >
> > Finally, I ask Genuity/Level3's name servers.  Genuity/Level3 acts
> > provides secondary name service for our domains.  In one case it reports
> > the domain or name isn't valid, and in another it times out just like my
> > own nameserver does. But again, when I look up a name within the
> > publishingconcepts.com domain that I know doesn't exist, I get a
> > different kind of error (the expected error) back:
> > 
> > 
> > $ nslookup amherst.publishingconcepts.com 4.2.49.3         #
> > Genuity/Level3
> > Server:         4.2.49.3
> > Address:        4.2.49.3#53
> > Non-authoritative answer:
> > *** Can't find amherst.publishingconcepts.com: No answer   # WRONG ANSER
> dig says this server doesn't offer recursion, although that may be
> different if you are a customer please use "dig" and show the whole
> output where it is useful.
> 

You're correct -- Level(3)'s 4.2.49.x servers are authoritative-only.  
The caching servers are 4.2.2.x.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***


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