Dns question

[Sina Bahram]

Hi Andrew,

Thank you for your suggestions. I'll make sure to follow them.

Take care,
Sina 

-----Original Message-----
From: speakup-bounces at braille.uwo.ca [mailto:speakup-bounces at braille.uwo.ca]
On Behalf Of Andrew Hodgson
Sent: Tuesday, May 24, 2005 1:35 PM
To: Speakup is a screen review system for Linux.
Subject: RE: Dns question

Hi,

1.  DNS should not be used for this purpose, because a domain can be
registered and the NS records can point at stealth nameservers (which do not
exist), or have some other weird DNS configuration.  One thing you could do,
however, is to search the root DNS zones for the domain you are looking for,
and see if the zones for domain.com exist (you will just get NS records
returned, or nothing if the domain doesn't exist), but I am not sure whether
this is 100% fullproof because of the state some domains are in (i.e, lapsed
etc), which may not have records in the DNS but are not available for active
registration either.  

2.  If you do a soa check, do it on the parent domain (i.e, domain.com
instead of www.domain.com).

Thanks.
Andrew.

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