SuiteLink is a Postal Service™-maintained database of business addressing information allowing ZP4 to automatically correct incomplete business addresses by adding known secondary (suite) information.

       Before processing   After processing
       -----------------   --------------------
           test corp       Test Corp
           10 main         10 N Main St Ste 201
           nipomo          Nipomo CA 93444-1234
ZP4 is able to automatically determine the secondary (suite) information for a company address, if the company is listed in the SuiteLink database. As of May 2011, 21 million records are included in SuiteLink.

LACSLink®, SuiteLink and DPV® are required to determine the proper CASS ZIP + 4 code for an address.

Go to the ZP4 home page.