[thierryrietsch]

Well exactly this is the total wrong approach. This does not work at all. For example you will find myself not in address nook neither is my mobile phone number in any public phone book. A customer knows exactly how his address is written and furthermore mail services are most of the time able to figure out where the delivery belongs to If the address is not clear. As mentioned by the other comments above, there are so many exceptions. This is a pretty good article about zip code: http://www.mjt.me.uk/posts/falsehoods-programmers-believe-ab...

[JohnTHaller]

There are databases which allow you to lookup addresses simply to find out if they are valid, not to reverse lookup the name. Your address is in there. Similarly, there are databases which allow you to lookup whether a phone number exists but not the name. Your phone number is in there, too.

Not being in the phone book or having a "private" number has nothing to do with your address and phone number not being in various lookup databases.

[thierryrietsch]

Where are those databases?

[JohnTHaller]

There are lots of providers that do phone verification on unlisted numbers. Here's a recent release from a quick google search: http://cardnotpresent.com/news/cnp-news-may13/TNS_Leverages_...

Tons of places do address verification and you don't need to be in any phone book for it to work. Even the USPS does address verification both paid (for businesses) and free (for non-profits).

It's pretty funny to get downvoted to zero on a true post just because someone really wishes it were true that their phone number and address can't be verified.

[Amadou]

https://en.wikipedia.org/wiki/Postal_address_verification#Pr...