[RFCI-Discuss] Interesting Question

[Abuse Desk]

"Derek J. Balling" <Dredd at megacity.org> wrote:
> Why is it, then, that if I was to query gtld-servers.net servers,
> looking for a .com domain, I get something completely different?
This may be because you were looking for a .com domain's ns records, you
weren't looking for a .com domain (there's a difference, which you may
want to program around).  See the following:

C:\>dig @A.GTLD-SERVERS.NET yahoo.com

; <<>> DiG 9.2.3 <<>> @A.GTLD-SERVERS.NET yahoo.com
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 41
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 5, ADDITIONAL: 5

;; QUESTION SECTION:
;yahoo.com.                     IN      A

;; AUTHORITY SECTION:
yahoo.com.              172800  IN      NS      ns1.yahoo.com.
yahoo.com.              172800  IN      NS      ns2.yahoo.com.
yahoo.com.              172800  IN      NS      ns3.yahoo.com.
yahoo.com.              172800  IN      NS      ns4.yahoo.com.
yahoo.com.              172800  IN      NS      ns5.yahoo.com.

;; ADDITIONAL SECTION:
ns1.yahoo.com.          172800  IN      A       66.218.71.63
ns2.yahoo.com.          172800  IN      A       66.163.169.170
ns3.yahoo.com.          172800  IN      A       217.12.4.104
ns4.yahoo.com.          172800  IN      A       63.250.206.138
ns5.yahoo.com.          172800  IN      A       216.109.116.17

;; Query time: 460 msec
;; SERVER: 192.5.6.30#53(A.GTLD-SERVERS.NET)
;; WHEN: Sun Dec 04 17:14:49 2005
;; MSG SIZE  rcvd: 197


C:\>dig @A.GTLD-SERVERS.NET yahoo.com ns

; <<>> DiG 9.2.3 <<>> @A.GTLD-SERVERS.NET yahoo.com ns
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 41
;; flags: qr rd; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 5

;; QUESTION SECTION:
;yahoo.com.                     IN      NS

;; ANSWER SECTION:
yahoo.com.              172800  IN      NS      ns1.yahoo.com.
yahoo.com.              172800  IN      NS      ns2.yahoo.com.
yahoo.com.              172800  IN      NS      ns3.yahoo.com.
yahoo.com.              172800  IN      NS      ns4.yahoo.com.
yahoo.com.              172800  IN      NS      ns5.yahoo.com.

;; ADDITIONAL SECTION:
ns1.yahoo.com.          172800  IN      A       66.218.71.63
ns2.yahoo.com.          172800  IN      A       66.163.169.170
ns3.yahoo.com.          172800  IN      A       217.12.4.104
ns4.yahoo.com.          172800  IN      A       63.250.206.138
ns5.yahoo.com.          172800  IN      A       216.109.116.17

;; Query time: 450 msec
;; SERVER: 192.5.6.30#53(A.GTLD-SERVERS.NET)
;; WHEN: Sun Dec 04 17:15:23 2005
;; MSG SIZE  rcvd: 197

> And, bonus points to anyone except Ralf or Phil Kizer who can guess
> why I noticed this discrepancy....
It looks like you're working on the bogusmx full-dns-tree-traversal
code.  Good luck with that!

-- 
Best Regards,

Abuse Desk
DeSpam.Us