[Info-vax] ZIP+4

[Stephen Hoffman]

On 2019-05-07 03:13:29 +0000, John E. Malmberg said:

> On 5/6/2019 11:16 AM, Phillip Helbig (undress to reply) wrote:
>> In article <qapkro$asf$1 at reader2.panix.com>, Tim Sneddon 
>> <tsneddon at panix.com> writes:
>> 
>>> Dave Froble <davef at tsoft-inc.com> wrote:
>>>> We are using a service via internet for address validation which also 
>>>> returns geo location I believe.  Communications are via HTTPS, though 
>>>> why anyone demands the "S" for data that is freely available is a bit 
>>>> of a mystery to me.
>>> 
>>> The data may be freely available, but the fact that you are looking at 
>>> it can be used as a part of a larger information gathering exercise.
>> 
>> Yes.  And, theoretically, you might be the victim of fake data due to spoofing.
> 
> ZIP+4 is totally different than geo-location.  ZIP+4 is for validation 
> of U.S. mailing/shipping addresses.

ZIP+4 is routinely used for geolocation inclusive of the various 
problems known with that usage, and ZIP+4 is also used as part of 
address normalization processes, and IP address geolocation is commonly 
attempted though that's probably best considered to be semi-reliable at 
the country level and not much more finely, and most any network 
connection should be using TLS or ilk. TLS and ilk are far from a 
panacea, but cleartext is a bigger problem and for various reasons and 
some of which that might not be applicable specifically to developers.


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