Understanding Postal: Biggest Rate Case Threat? Regulatory Changes

CASS L Cycle: The next cycle, which will require that a ZIP + 4 code only be assigned if the primary number can be validated against the delivey point validation (DPV) file.

Delivery Point Validation (DPV): A database that checks the validity of any house, apartment, post office box, rural box, mail drop or commercial address that receives mail. It allows enhanced address validation beyond what’s possible when only the ZIP + 4 database is used.