NCOA is a record system for all COA requests and is used to produce the NCOA^Link product.  The NCOA^Link Product is a secure dataset of approximately 160 million permanent change-of-address (COA) records constructed from names and addresses of individuals, families, and businesses who have filed a change-of-address with the Postal Service™. Developed with secure data store technology to increase postal customer data security and protect this information’s privacy, the NCOALink Product enables mailers to process mailing lists and update lists with new addresses before mailing. The NCOA^Link data is provided on a regular basis to companies that have been licensed by the Postal Service.