Jeff Chan wrote:
In principle, this is a good concept; using domain whois data to spot bad domains can be useful. In practice, it's a really, really, really bad idea since the public whois infrastructure is not designed for this kind of high volume use. If many people did it, it would result in an effective DDOS against whois service, even with caching and delays. Please don't do it. It's much better to let URI blacklist operators such as SURBL handle these domains in a centralized way and publish the domain data via our four dozen DNS servers, etc. Jeff C.
The other thing is that a LOT of registrars and registries rate limit whois lookups, so it won't work after you've done X lookups in a 24 hour period ....
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