North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: Detecting a non-existent domain
> The answer so far seems to be to query *.TLD, nab all the records, > and then compare them all the results you get back from querying the > domain. If there is anything that doesn't match, you are in the > clear. (Modulo internal networks and localhost and all those fun > tricks of course--but that's a different problem.) > > The fact that this is a single IP comparison with Verisign today > presumably does not preclude the wonders of MX records, CNAME's, > multiple A records and all of that in the future. Alg 101 1. Seed the isWildCard[] probability array. Generate N random strings. Attach ".NET" or ".COM" to them. Get records for them. Compare records to each other assigning them probability of being a wildcard based on the repetitiveness of the data. 2. Query domain name in question. Compare the result with isWildCard[] probability array. Alex
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