Issue with reverse dns and local caching name server

Noel Butler noel.butler at ausics.net
Wed Jun 10 11:57:54 UTC 2009


On Wed, 2009-06-10 at 11:20 +0100, Jason Crummack wrote:

> dig @82.138.243.4 30.22.203.in-addr.arpa NS 
> 

I get a response from that IP as well, however from mine, I don't, I
suspect that's the server cache.
Is this IP range still delegated to you? 


 dig  30.22.203.in-addr.arpa NS 

; <<>> DiG 9.4.2-P2 <<>> 30.22.203.in-addr.arpa NS
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 14148
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;30.22.203.in-addr.arpa.		IN	NS


I get a response from that as well, however from mine, I don't, I
suspect thats the server cache
Is this IP range still delegated to you?/

 dig  30.22.203.in-addr.arpa NS 

; <<>> DiG 9.4.2-P2 <<>> 30.22.203.in-addr.arpa NS
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 14148
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;30.22.203.in-addr.arpa.		IN	NS


 dig 47.30.22.203.in-addr.arpa @ns01.opensystems.com.au.

; <<>> DiG 9.4.2-P2 <<>> 47.30.22.203.in-addr.arpa
@ns01.opensystems.com.au.
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 413
;; flags: qr aa rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;47.30.22.203.in-addr.arpa.	IN	A

;; AUTHORITY SECTION:
30.22.203.in-addr.arpa.	38400	IN	SOA	ns01.opensystems.com.au.
support.opensystems.com.au. 1052091109 10800 3600 604800 38400


Querying your server gets a response, but like mine, none others seem
to, what changes have you made recently?
a Te$ltra server I query also knows it, but my secondary DNS (located in
California) does not either, nor does ns1.exetel
so somethings changed


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