nanog mailing list archives

Re: What *are* they smoking?


From: Tomas Lund <tlund () swip net>
Date: Tue, 16 Sep 2003 03:13:49 +0200 (CEST)


On Mon, 15 Sep 2003, Chris Adams wrote:

It appears that the most reliable way to detect a wildcard response for
'somedomain.tld' is to query for '*.tld'; if the results match, then
'somedomain.tld' doesn't really exist.

Just make up a number of fake domains and resolve them. If they return the
same answer, thats the answer to change back into NXDOMAIN.

//tlund


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