Dns question

[Sina Bahram]

Hi Kp,

Before we take this offline. Let me add one more thing.
The reason I'm not using whois, is because I have more than one query to
make, and I have heard that they frown upon automated access.

But if you can offer anything else, I'll be more than happy to contact you
offline.

Take care,
Sina 

-----Original Message-----
From: speakup-bounces at braille.uwo.ca [mailto:speakup-bounces at braille.uwo.ca]
On Behalf Of Kelly Prescott
Sent: Tuesday, May 24, 2005 3:48 AM
To: Speakup is a screen review system for Linux.
Subject: Re: Dns question

ok, here goes a brief informational post about DNS...
there is ***no*** complete source of information about domains registered
etc...
There is, however, many registries that maintain information about various
domains...
With that said, there is a way to do a better job of finding the
availability of a domain.
checkout bwwhois available from
http://whois.bw.org
This client, among other things, has a table of which registrys administer
which top-level domains...
Hope this helps.
email me privately if you need more info.
kp


On Mon, 23 May 2005, Sina Bahram wrote:

> Hi all,
>
> I hope everyone is doing well.
>
> I appologise for the off topic message, but I know that a great deal 
> of you are enthusiasts in networking, and are quite more well versed 
> than myself in DNS, which is where my question arises.
>
> I am building a utility that checks to see if a particular domain is 
> registered or not.
>
> Think of it like a stripped down personalize version of whois, if you
will.
>
> My problem is that I have yet to figure out the absolute minimum 
> requirement, in terms of something that can be programmatically 
> determined, that says: hey this .com is taken.
>
> I am using the net::dns module from CPAN in my perl script, and I have 
> tried looking at the SOA record, because that is what I have picked up 
> from my documentation and google runs as being the absolute requirement.
>
> Yet, I still get websites like
>
> www.hospital.com
>
> And
>
> www.patient.com
>
> Which do not return SOA records to my program, yet they are owned ... 
> I think both of those, since 1997.
>
> So, my question is, what is the absolute minimum? I would even 
> appreciate documentation pointers, but I just can not learn DNS in and 
> out right now, due to other job, research, and student requirements; 
> however, I'm more than willing to RTFM, as it were, I just haven't 
> found anything that doesn't point me to either MX or SOA records.
>
> Thanks so much for any assistance.
>
> Take care,
> Sina
>
>
>
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