Contact us

Do you have a question, comment or complaint?
Get in touch with us by e-mail, phone or mail – or pay us a visit.

By e-mail

Send your questions, comments or documents to

By phone

NSSO Contact can be reached on 02/509.59.59, Monday to Friday from 8 am to 6 pm.

(Outside these hours, you can request a callback. NSSO Contact will return your call the following day.)

By post

Send your questions, comments or documents by post to:

National Social Security Office
Place Victor Horta 11,
1060 Brussels

Our office

You can visit our office in Antwerp:

Frankrijklei 81-83
2000 Antwerp

Our opening hours are:

  • Tuesday, Wednesday and Thursday from 9am to 12.30pm or by appointment.