On Fri, 2009-05-22 at 17:36 -0700, Tom Eastep wrote:
> I'm assuming that reverse DNS lookup can also be used to identify this
> ISP, right?

And could also allow anyone else to spoof themselves as being from said
ISP.  Personally, I would not trust an in-addr.arpa result in any way
other than informative.

b.

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