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When we did "Remote Encoding" for the USPS one of the early common "modes" was asking for Zipcode + 4 + Last 2 of House Number. The administrators explained th
by akira2501 3y ago
When we did "Remote Encoding" for the USPS one of the early common "modes" was asking for Zipcode + 4 + Last 2 of House Number. The administrators explained that this 11 digit number was enough to uniquely identify most deliverable addresses "boxes" in the United States.