To receive address enrichments for Belgium, install the latest supplementary reference data files for Belgium and ensure that the valid license keys are available for the data files.

NIS codes are five-digit codes that uniquely identify geographic areas in Belgium. If you enable enrichment for Belgium, Address Verification returns a nine-digit code that contains the five-digit NISCode and a four-digit Neighborhood ID.

For example, Address Verification returns

21004A001

as an enrichment to the following address:

Rue au Beurre 1
1000 Bruxelles
BEL

In this example,

21004

is the NISCode and

A001

is the Neighborhood ID.