Dns question

[Kelly Prescott]

there is an oreiley book called "dns and bind"
There is a version that also has the text in electronic (html) format.
It is a good read and explains a lot of the reasons for the things you 
observe.
kp


On Tue, 24 May 2005, Sina Bahram wrote:

> That's exactly my point.
>
> Isn't that bizaare?
>
> hospital.com has been owned since like 1997 by some company in California,
> yet if you do a dns query ... You get nothing!
>
> Now, I'm a computer science student, and I sincerely don't mind reading the
> RFC's and the millions of other insanely boring documents detailing the DNS,
> or excuse for DNS, protocol and structure we have on this planet; however, I
> do have a problem with things not conforming to said standard.
>
> Obviously, at this point, I am still looking for things that I am doing
> wrong, not for things that they are doing wrong. I just can't find anywhere
> else to look. My whoel program is 10 lines for goodness sakes ... A few more
> if you count the braces, *smile*.
>
> If I were anyone else, I'd tell myself.
>
> *smile*, fustrated much?
>
> But, *sigh*, this is quite agrivating, and I really really appreciate you
> taking the time to lookup those sites.
>
> Please let me know if you have any incites at all.
>
> Take care,
> Sina
>
> -----Original Message-----
> From: speakup-bounces at braille.uwo.ca [mailto:speakup-bounces at braille.uwo.ca]
> On Behalf Of Ralph W. Reid
> Sent: Tuesday, May 24, 2005 7:34 PM
> To: Speakup is a screen review system for Linux.
> Subject: Re: Dns question
>
> I just tried `host` and `dig` to look up www.hospital.com and
> www.patient.com, and I could not find any IP numbers for either URL.
> I'm not sure what you mean by these URL's being 'owned', but they do not
> hseem to have any associated IP numbers, hence the DNS look up failure.
> HTH, and have a _great_ day!
>
> On Mon, May 23, 2005 at 10:47:17PM -0400, 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
>
> --
> Ralph.  N6BNO.  Wisdom comes from central processing, not from I/O.
> rreid at sunset.net  http://personalweb.sunset.net/~rreid
> ...passing through The City of Internet at the speed of light!
> 1 = x^0
>
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