Nine digit zip code
jhurley0305 at sbcglobal.net
Tue Nov 30 20:03:21 EST 2010
Bob and Pete,
Thanks for bringing this issue up.
Some years back the USPS's web site made it much easier to do batch
process of addresses.
When they changed it to make it more difficult, I wrote a letter to
the Postmaster General. (Yes, I know, really stupid.) I suggested that
they might instead make access to the full list more readily
available. After all the 9 digit zip makes their job of sorting and
delivery much easier. I also questioned the rationale of charging less
for bulk mailing, but making it more expensive by charging for the
data (9 digit zip) that makes it possible.
Unfortunately, the list is a money maker and the PO is perennially in
There is one application of the stack that shouldn't create a problem
and that is as a mechanism for validating an address. If the address
is not in their delivery DB, the return message reads: "The address
may be non-deliverable."
> Right, but not a lot from one place. I think their acceptable use
> would be under 30 or
> 40 hits a day from one IP, but if they get thousands, I think
> someone might contact you.
> They have some kind of published Acceptable Use policy on the site
> don't they? If not,
> then I guess you are in the clear.
> On Nov 30, 2010, at 4:09 PM, Peter Haworth wrote:
> > USPS has a zip code lookup feature on their web site and seems
> like they would expect
> a lot of people using it....
> > Pete Haworth
> > On Nov 30, 2010, at 2:14 PM, Bob Sneidar wrote:
> >> Also be advised that too many hits from one place may result in
> alarms going off. It
> may have changes since I thought about doing this way back when, but
> they offered this
> site as a way for the every day user to get a zip+4, not for a
> commercial app to do it
> on the cheap as a way to avoid paying for the zip+4 database, which
> back then at least
> they charged you for.
> >> Bob
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