How to verify Concentric.net has delegated reverse lookups to my NS?
newsonly at please.com
Fri Nov 12 07:43:44 UTC 1999
The idea is for my nameserver to answer reverse lookup queries for hosts in
my domain. My nameserver (ns1.radiusweb.com) will already answer correctly
when using nslookup to resolve 188.8.131.52 (for example.) At this time
the only way to get this reverse lookup to resolve properly is to directly
query my nameserver. Somewhere the recursion process fails (I'm assuming at
Is it sufficient then for concentric to do something like this?
184.108.40.206.in-addr.arpa. IN NS ns1.radiusweb.com.
220.127.116.11.in-addr.arpa. IN NS ns1.radiusweb.com.
18.104.22.168.in-addr.arpa. IN NS ns1.radiusweb.com.
22.214.171.124.in-addr.arpa. IN NS ns1.radiusweb.com.
126.96.36.199.in-addr.arpa. IN NS ns1.radiusweb.com.
. . . . . . . .
188.8.131.52.in-addr.arpa. IN NS ns1.radiusweb.com.
Barry Margolin <barmar at bbnplanet.com> wrote in message
news:O5EW3.97$vE2.3543 at burlma1-snr2...
> In article <80deni$lqe at journal.concentric.net>,
> David Cunningham <newsonly at please.com> wrote:
> >This should be an easy one. Anyone know a good command to determine if
> >concentric.net has delegated reverse lookups for 184.108.40.206/240 to
> >nameserver "ns1.radiusweb.com"?
> >Also, did I specify the above mask correctly? My address range at
> >is 220.127.116.11-224. (I'm new at this.)
> No, it's 18.104.22.168/28. The number after the slash is the number of
> 1-bits in the network mask. Also, your range ends at .223, not .224.
> It looks like the created the delegation; you can see it with:
> dig -x 22.214.171.124/28 ns @nameserver.concentric.net
> However, they haven't created the CNAME records for
> 126.96.36.199.in-addr.arpa through 188.8.131.52.in-addr.arpa. If you
> dig -x 184.108.40.206 any @nameserver.concentric.net
> you won't see the CNAME record that should be there.
> Barry Margolin, barmar at bbnplanet.com
> GTE Internetworking, Powered by BBN, Burlington, MA
> *** DON'T SEND TECHNICAL QUESTIONS DIRECTLY TO ME, post them to
> Please DON'T copy followups to me -- I'll assume it wasn't posted to the
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