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From: johnl@iecc.cambridge.ma.us (John R. Levine)
Newsgroups: comp.dcom.telecom
Subject: Re: 900 Numbers and Privacy
Message-ID: <telecom11.425.3@eecs.nwu.edu>
Date: 4 Jun 91 18:04:53 GMT
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X-Telecom-Digest: Volume 11, Issue 425, Message 3 of 15

In article <telecom11.421.3@eecs.nwu.edu> is written:

> One very simple way to find your "nine-closest neighbors" is by using
> ZIP + 4. ... I discovered that I share a ZIP + 4 with *one* neighbor.
> I do not know how ZIP + 4 deals with high-occupancy buildings, but I 
> suspect that a ZIP + 4 could be set up to handle one or more floors of
> a single building.

ZIP + 4 is probably how they do closest neighbors.  For large
buildings, a single building or even a single office in a building can
have its own zip.  For PO boxes, a group of boxes or a single box gets
a zip (anything sent to zip 02238-0349 comes to me, for example.)
Finding the nine people with the closest zips would be a pretty good
approximation to the closest neighbors.

Using that to make mailing lists is still a pretty unpleasant idea.
Perhaps we could try to add language to the Markey bill forbidding the
use of CLID and ANI info for anything other than call billing and
verification.


Regards,

John Levine, johnl@iecc.cambridge.ma.us, {spdcc|ima|world}!iecc!johnl