whois

[Ian Zimmerman]

Fraser> I did something similar a few years ago.  

[...]

Fraser> I would love to have relied on whois but I saw 2 problems with
Fraser> it.  The one you're talking about (lack of consistency in data)
Fraser> and also the fact that a lot of ISPs do show who specific
Fraser> subnets are delegated to ...

Here's what we're trying to ape^H^H^Happroximate:

http://www.senderbase.org/
http://www.trustedsource.org/

(particularly the first one).  Any idea how they decide what's the same
"network" or "ISP"?

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