OnlinePostcodeZoeken. nl is a Dutch online address and postcode lookup service that helps users find postcode details across the Netherlands. Visitors can search for a postcode using an address, town, street or other location information, or enter a postcode to identify its associated street, town and province.

The service also provides information about streets and house numbers linked to postcodes, helping users check whether a postcode exists and locate addresses within a municipality or city. Search options cover Dutch provinces and popular locations, and the site displays recently searched postcodes for convenient reference. In addition to address lookups, OnlinePostcodeZoeken.

nl offers a search for nearby postboxes, post offices and other postal locations. Users can enter an address or postcode to see nearby results, including distance and travel time. The website presents its tools as a quick way to find postal and location information, with results intended to appear within seconds.

OnlinePostcodeZoeken. nl is associated with Digital Economy Hub BV, while its hosting and web development are credited to 4BIS Innovations