Contact

Mailing address
Addresses

Netherlands Competition Authority
P.O. Box 16326
2500 BH The Hague
The Netherlands
Muzentoren
Wijnhaven 24
2511 GA The Hague
The Netherlands
Zurichtoren
Muzenstraat 81
2511 WB The Hague
The Netherlands
The NMa can be reached by phone and by fax using the following numbers:

T: +31-70-330 33 30
F: +31-70-330 33 70

Consumer queries: ConsuWijzer
If you have any consumer queries, please contact consumer information portal ConsuWijzer, which provides practical advice on consumer rights and duties. ConsuWijzer is jointly operated by the Netherlands Competition Authority, the Independent Regulator of Post and Electronic Communications in the Netherlands OPTA, and the Dutch Consumer Authority.

When in the Netherlands, you can reach ConsuWijzer (national rate) by calling 088-0707070, or go to www.consuwijzer.nl.

Business queries: NMa Information Line
If you have any business queries, please contact the NMa Information Line, which can be reached by calling one of the following numbers:

For questions concerning competition (in general) or transport, please call +31-70-330-1306.

For questions concerning energy, please call +31-70-330-3545.

Or email your query to info@nmanet.nl.

In addition, the NMa Information Line greatly values any tip-offs or indications concerning possible violations of the Competition Act.