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Re: [weirds] New Version Notification for draft-sheng-weirds-icann-rws-dnrd-01.txt

Dave Piscitello <dave.piscitello@icann.org> Thu, 22 March 2012 14:35 UTC

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From: Dave Piscitello <dave.piscitello@icann.org>
To: Francisco Obispo <fobispo@isc.org>
Date: Thu, 22 Mar 2012 07:34:58 -0700
Thread-Topic: [weirds] New Version Notification for draft-sheng-weirds-icann-rws-dnrd-01.txt
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Subject: Re: [weirds] New Version Notification for draft-sheng-weirds-icann-rws-dnrd-01.txt
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When we did a study on prevalence of privacy protected registrations in 2010, we sampled ~50,000 domains that Spamhaus had placed on the DBL. We collected Whois for these and needed unique parsers to extract data from responses of 96 registrars, another 15 for gTLD registries, and 10 for ccTLDs in our sample.

I can't claim for certainty that every ccTLD Whois response pattern is unique but if ~400 is "high" it's not inordinately high. Also, the number of parsers is not a constant. Certain registrars change their responses as an anti-harvesting measure. So over time, if you were writing parsers, you may have accumulated several for certain registrars.

On Mar 21, 2012, at 11:18 AM, Francisco Obispo wrote:

> Not really/necessary,
> 
> Port 43 format is free text, and with >240 ccTLDs, gTLDs, RIRs, and others, it is easy to see how different those implementations would be...
> 
> Perhaps ICANN has some details on a whois study.
> 
> 
> On Mar 21, 2012, at 7:56 AM, Eric Brunner-Williams wrote:
> 
>> On 3/21/12 10:26 AM, Francisco Obispo wrote:
>>> It's not a matter on whether they will ignore it or not, it's about whether they will need to do ~400 different implementations of the parser (sadly like we have today with port 43 whois),
>> 
>> can the number cited ("~400") be associated with some published study
>> on actual implementations?
>> 
>> -e
>> _______________________________________________
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> 
> Francisco Obispo 
> email: fobispo@isc.org
> Phone: +1 650 423 1374 || INOC-DBA *3557* NOC
> PGP KeyID = B38DB1BE
> 
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