Quote:
Originally Posted by Quoth
But later Amazon added address checking and now the address has to be a USA residential address (Is there a database? Zip Code?).
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Yes, there is. I believe (but do not know for sure) that it is maintained by the US Postal Service and contains every street delivery address known to the USPS. Occasionally, when filling in my street address in an online form, a drop down will appear with matching addresses as I type until I type enough that it finds the correct one. Or I select one from the drop-down list. Those web sites use the database, but most do not. I presume the site pays for access to the database as a way to minimize shipping errors.