Use one of the DNS modules to lookup the A records. This will give you IP addresses which you can check against each other. Alas, this is far from fullproof: load sharing www servers via DNS will give you different IPs each time you lookup, and also a single server can serve many sites, all of them will have same ip (apache virtual names.) One step better is head information, but still not fullproof. Ultimately only full content comparison is 100% proof of content similarity or otherwise. Chris

In reply to Re: Eliminating "duplicate" domains from a hash/array by aquarium
in thread Eliminating "duplicate" domains from a hash/array by hacker

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