https://bel.areacodebase.com/
Home | Belgium Area Code Database
There are more than 150 Belgium Area Code Database in this website, including NDC, Usage, Operator, Area etc. plus with online map.
belgium area code database
https://bel.areacodebase.com/new-areacode-bel/Ndc/%5BNdc%5D
NDC:[Ndc] | Belgium Area Code Database
belgium area code databasendc