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.
Semaphore Corporation is a non-exclusive SuiteLink Interface and Data Distributor
of the Postal Service.
SuiteLink data may not be used outside of the United States.
Use of SuiteLink is strictly limited to improving business delivery addresses
in multi-occupation buildings for use on letters, flats, postcards, packages, leaflets,
magazines, advertisements, books and other printed material, and any other item that will
be delivered by the Postal Service. The prices of Semaphore Corporation services
are not established, controlled or approved by the Postal Service.
The following trademarks are owned by the United States Postal Service®:
LACSLink, SuiteLink, Postal Service, and United States Postal Service. [DA#1.07]