USPS CASS/DPV Software: All-inclusive mail automation solution integrating your mailroom with the fastest, most economical, most reliable postal service. Interactive Component Diagram Page Topics: ZIP-code Lookup - Postal Code Lookup - PO BOX Lookup and DPV Delivery Point Validation

ZIP-code - Postal Code - PO BOX - DPV Delivery Point Validation

If the ZIP-code is known, city and state-code can be bypassed going directly to postal ZIP-code lookup. Postal state-code and city lookup are described in the previous tour page. ZIP-code lookup implicitly sets the city and state-code while establishing the last line postal code context for street, high-rise and rural route and provides USPS CASS certification and DPV delivery point validation of PO BOX addresses.

Postal Code Lookup - City, State-code, ZIP-code Lookup Slide

The ZIP-code lookup postal software image below is the result of entering "36109" in the ZIP-code lookup clue field. The city/state-code, "MONTGOMERY AL" were established implicitly and the field cursor automatically moved into the PO BOX clue field.

PO BOX Postal Code Lookup - PO BOX CASS Certification and DPV Delivery Point Validation

The message line guides the user to a single USPS CASS certified DPV delivery point validated PO BOX address solution. The user can either enter a PO BOX number or <click> either of the address type tabs for street or building. The rural route tab is closed because the postal code lookup context for the ZIP-code does not indicate rural route service.

If the city or ZIP-code has PO BOX service, a PO BOX number field is provided for creation of USPS POSTNET barcoded CASS certified and delivery point validated PO BOX addresses. The ZIP-code does not have to be specified to create and validate PO BOX addresses or to advance to other address element tabs. In practice, it is advisable to set city state context leaving the ZIP-code blank because the input ZIP-code could be wrong.

Postal ZIP-code Lookup Data Window

The postal ZIP-code window lists all ZIP-codes in the established city followed by USPS delivery service columns for GENERAL DELIVERY, PO BOX, street, high-rise and rural route. Columns marked with an ‘X’ indicate which USPS delivery services are provided for the ZIP-code. A sixth delivery service column exists for Puerto Rico urbanizations and is only used when the state-code is set to "PR".

If the ZIP-code has PO BOX service, absolute ZIP+4 PO BOX ranges are shown. Although uncommon, ZIP-codes can have alphanumeric PO BOX numbers. The ZIP-code "36109" has a red 'X' after the integer PO BOX range indicating that the ZIP-code does have alphanumeric PO BOX numbers.

The previous tour page describing postal state-code and city lookup shows all ZIP-codes for the same city.

Postal Code Lookup/ZIP-code Lookup Context

If the established city is a postal city, ZIP-code candidates are limited to the postal city's ZIP-codes. When the established city is a non-postal city, the ZIP-code list includes all ZIP-codes that the USPS publishes for the non-postal city.

PO BOX ZIP+4 Range Postal Code Lookup Window

There is a USPS postal ZIP+4 range window showing all PO BOX ranges for any ZIP-code that has PO BOX delivery service. <Right-click> on the ZIP-code row opens the PO BOX range window. Postal ZIP+4 range windows also exist for street, high-rise and rural route data windows found in later tour pages.