nanog mailing list archives

Re: IPv4 country of origin


From: alex () yuriev com
Date: Thu, 3 Oct 2002 17:36:02 -0400 (EDT)


Wrong answer.

Just because free public dbs dont have that info does not mean that it does
not exist.

Say I have about 10 /16's reachable through firewalls in SJC, RDU, SYD, and AMS.
No traceroutes or pings can make it past these firewalls, nor do the hostnames
indicate any particular location.  How exactly do you plan on mapping these to a
zip code, when I can tell you those addresses are fairly randomly spread, in /24
increments, to sites all over the world?


It is very easy. Anyone would care about it only when users from those
addreses interact with whatever the software that ends up creating those
databases. If those users never buy stuff from Amazon.com, Amazon.com does
not care where they are. But eh moment they do, somewhere someone is
cruniching the data that says "Of 10 sites that I saw this IP address access
and provide a clearing for the credit card transaction, 9 ended up being
within 3 miles radius of ZZZZ. Lets put a tag on that"
 
The neat thing about selling databases like that is nobody can ever prove how
incredibly inaccurate they are.  Just come up with a reasonable-sounding
collection methodology and claim any counterexamples are just flukes, then
collect money from the saps who believe you...

The really neat things about talking to computer geeks is that they all
operate with the lots of absolutes. They will explain to you why in a
specific case it does not work and forget that those specific cases are
usually exceptions.

ALex

P.S.    So, ever bought stuff from Amazon from one of those IP addresses and
        sent it to some non-related location *just* to confuse the mapping
        systems?



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