Lookup weirdness
Barry Margolin
barmar at alum.mit.edu
Sat Nov 20 14:00:18 UTC 2004
In article <cnm7eg$23ic$1 at sf1.isc.org>, Jim Reid <jim at rfc1035.com>
wrote:
> >>>>> "Mike" == Mike B <toastyhamster at hotmail.com> writes:
>
>
> Mike> Ok, this has me baffled. I'm running a primary/secondary
> Mike> DNS server, neither are able to resolve anything in the
> Mike> 152.158 domain (the example I am using is
> Mike> 152.158.16.48). Everywhere else on the 'Net I have tried
> Mike> can. The only anomaly I can find is that www.dnsstuff.com
> Mike> occasionally shows a bad delegation, this is a fault of one
> Mike> of the ARIN servers, which is delegating it to a now
> Mike> decommissioned ibm.net server.
>
> This is not "a fault of one of the ARIN servers". ARIN's name servers
> are only responding with the data they've been given. Garbage in,
> garbage out. The responsibility for that problem doesn't rest with
> ARIN either. The 158.152.in-addr.arpa zone administrator has screwed
> up the delegation of this zone.
>
> They have told ARIN to delegate the zone to ns01.ca.us.ibm.net, a
> name that doesn't exist, and ns1.us.prserv.net, which does not answer
> authoritatively for this zone. So it's no wonder reverse lookups for
> 152.158/16 are not working. Nobody can find authoritative name servers
> for 158.152.in-addr.arpa. It looks like zone administrator has changed
> the name servers for the zone and forgotten to tell ARIN so that the
> delegation info in the parent zone gets changed.
It answered authoritatively when I tried it:
$ dig -x 152.158 any @ns1.us.prserv.net +norec
; <<>> DiG 9.2.2 <<>> -x 152.158 any @ns1.us.prserv.net +norec
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 55715
;; flags: qr aa ra; QUERY: 1, ANSWER: 5, AUTHORITY: 4, ADDITIONAL: 4
;; QUESTION SECTION:
;158.152.in-addr.arpa. IN ANY
;; ANSWER SECTION:
158.152.in-addr.arpa. 86400 IN NS ns1.us.prserv.net.
158.152.in-addr.arpa. 86400 IN NS ns4.us.prserv.net.
158.152.in-addr.arpa. 86400 IN NS ns3.us.prserv.net.
158.152.in-addr.arpa. 86400 IN NS ns3.prserv.net.
158.152.in-addr.arpa. 86400 IN SOA master.us.prserv.net.
dns.us.ibm.com. 993751088 10800 3600 604800 86400
;; AUTHORITY SECTION:
158.152.in-addr.arpa. 86400 IN NS ns1.us.prserv.net.
158.152.in-addr.arpa. 86400 IN NS ns4.us.prserv.net.
158.152.in-addr.arpa. 86400 IN NS ns3.us.prserv.net.
158.152.in-addr.arpa. 86400 IN NS ns3.prserv.net.
;; ADDITIONAL SECTION:
ns1.us.prserv.net. 14400 IN A 165.87.194.244
ns4.us.prserv.net. 14400 IN A 165.87.201.244
ns3.us.prserv.net. 14400 IN A 165.87.201.243
ns3.prserv.net. 86400 IN A 165.87.201.243
;; Query time: 116 msec
;; SERVER: 165.87.194.244#53(ns1.us.prserv.net)
;; WHEN: Sat Nov 20 08:59:34 2004
;; MSG SIZE rcvd: 300
--
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
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