Re: Does IP have DNS or not?

On Wed, 7 Jul 2004 10:21:18 -0500 (CDT)
sjk@dredel.com wrote:

>
> It looks like there is no PTR for 63.82.232.8:
>
> The Authoratative servers are:
>
> NameServer: AUTH03.NS.UU.NET
> NameServer: AUTH00.NS.UU.NET
>
> AUTH00.NS.UU.NET returns an NS delagation -- but no PTR:
>
> ;8.232.82.63.in-addr.arpa. IN PTR
>
> ;; AUTHORITY SECTION:
> 232.82.63.in-addr.arpa. 21600 IN NS ns1.hometel.com.
> 232.82.63.in-addr.arpa. 21600 IN NS ns2.hometel.com.
>

There's also this little quirk


dig -t mx hometel.com

; <<>> DiG 9.2.2-P3 <<>> -t mx hometel.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34765
;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 2, ADDITIONAL: 2

;; QUESTION SECTION:
;hometel.com. IN MX

;; ANSWER SECTION:
hometel.com. 60 IN MX 200 hometel.com.mail6.psmtp.com.
hometel.com. 60 IN MX 300 hometel.com.mail7.psmtp.com.
hometel.com. 60 IN MX 400 hometel.com.mail8.psmtp.com.
hometel.com. 60 IN MX 100 hometel.com.mail5.psmtp.com.

;; AUTHORITY SECTION:
hometel.com. 86400 IN NS ns1.hometel.com.
hometel.com. 86400 IN NS ns2.hometel.com.

;; ADDITIONAL SECTION:
ns1.hometel.com. 172037 IN A 63.82.232.7
ns2.hometel.com. 172037 IN A 63.82.232.8

;; Query time: 155 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Jul 7 16:29:48 2004
;; MSG SIZE rcvd: 239

dig -t any hometel.com.mail6.psmtp.com

; <<>> DiG 9.2.2-P3 <<>> -t any hometel.com.mail6.psmtp.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 14190
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 0

;; QUESTION SECTION:
;hometel.com.mail6.psmtp.com. IN ANY

;; ANSWER SECTION:
hometel.com.mail6.psmtp.com. 300 IN A 12.158.35.251

;; AUTHORITY SECTION:
psmtp.com. 300 IN NS ns2.ns.postini.com.
psmtp.com. 300 IN NS ns4.ns.postini.com.
psmtp.com. 300 IN NS ns5.ns.postini.com.
psmtp.com. 300 IN NS ns1.ns.postini.com.