Truncated, retrying in TCP on Reverse lookup
Stephane Bortzmeyer
bortzmeyer at nic.fr
Fri Jul 10 20:40:56 UTC 2009
On Thu, Jul 09, 2009 at 05:50:02AM -0700,
Fr34k <freaknetboy at yahoo.com> wrote
a message of 119 lines which said:
> There should be one and only one PTR for that IP.
No. No good reason for such restriction.
> $ host 196.7.126.38
>From a machine with a proper Internet connection (i.e. no stupid
firewall blocking DNS packets > 512 bytes or blocking TCP), there are
no problems to retrieve the PTR:
% dig -x 196.7.126.38
; <<>> DiG 9.4.3-P1 <<>> -x 196.7.126.38
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32828
;; flags: qr rd ra; QUERY: 1, ANSWER: 15, AUTHORITY: 2, ADDITIONAL: 2
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;38.126.7.196.in-addr.arpa. IN PTR
;; ANSWER SECTION:
38.126.7.196.in-addr.arpa. 86323 IN PTR www.thewash.co.za.
38.126.7.196.in-addr.arpa. 86323 IN PTR www.gisstaff.co.za.
38.126.7.196.in-addr.arpa. 86323 IN PTR www.cheaprentalcars.co.za.
38.126.7.196.in-addr.arpa. 86323 IN PTR www.adventureservices.co.za.
38.126.7.196.in-addr.arpa. 86323 IN PTR mail.penoc.org.za.
38.126.7.196.in-addr.arpa. 86323 IN PTR mail.travelsense.net.
38.126.7.196.in-addr.arpa. 86323 IN PTR mail.mantlemapper.com.
38.126.7.196.in-addr.arpa. 86323 IN PTR mail.quintessentia.net.
38.126.7.196.in-addr.arpa. 86323 IN PTR mail.datanetsolutions.co.za.
38.126.7.196.in-addr.arpa. 86323 IN PTR mail.spatialdimension.co.za.
38.126.7.196.in-addr.arpa. 86323 IN PTR mail.spatialwebserver.co.za.
38.126.7.196.in-addr.arpa. 86323 IN PTR mail.spatialwebserver.com.
38.126.7.196.in-addr.arpa. 86323 IN PTR mail.adventureservices.co.za.
38.126.7.196.in-addr.arpa. 86323 IN PTR mail.explorationservices.co.za.
38.126.7.196.in-addr.arpa. 86323 IN PTR spa004-1.cust-gw.za.mtnbusiness.net.
;; AUTHORITY SECTION:
126.7.196.in-addr.arpa. 86323 IN NS ns1.iafrica.com.
126.7.196.in-addr.arpa. 86323 IN NS ns2.iafrica.com.
;; ADDITIONAL SECTION:
ns2.iafrica.com. 17787 IN A 196.7.142.133
;; Query time: 1 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri Jul 10 22:40:13 2009
;; MSG SIZE rcvd: 621
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