NMa Netherlands Competition Authority

Are you looking for general information from the NMa? Do you have any questions regarding competition, energy or transport? Please feel free to contact us. You can send us an email or fill out the online question form at any time.

The NMa can give you information, but it does not give any legal advice.
If you provide us with information, we have the right to use that information for oversight and enforcement purposes.

You could send us an email.

Alternatively, you could fill out the question form

You can call us from Monday through Friday, between 9 a.m. and 5 p.m.
Phone:  +31-70-330-3330
Fax:  +31-70-330-3370

If you have any business queries, please contact the NMa Information and Tip-Off Line, which can be reached by calling either number below (Monday through Friday, 9 a.m. and 5 p.m.):

For questions concerning competition (in general) or transport, please call +31-70-330-1306.
For questions concerning energy, please call +31-70-330-3545.

In addition, you can submit your tip-off or indication regarding possible violations of competition regulations.

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 NMa, the Independent Post and Telecommunications Authority (OPTA), and the Dutch Consumer Authority.
Practical tips, examples, tools (such as sample letters), and much more information can be found on ConsuWijzer’s website.

Phone: +31-88-070-7070 (Monday through Friday, between 8.30 a.m. and 5.30 p.m.).
For more information, please visit the website of ConsuWijzer.

The NMa has two press officers:

Ms. Barbara van der Rest-Roest, phone: +31-70-330-3362 or +31-6-2279-3063 (outside office hours)
Ms. Pauline Gras, phone: +31-70-330-5068 or +31-6-5471-5245 (outside office hours)

Email:pers@nmanet.nl

Netherlands Competition Authority
P.O. Box 16326
2500 BH  The Hague
The Netherlands

Zurich Tower (also for delivering express mail) 
Muzenstraat 81
2511 WB  The Hague
The Netherlands

Visitors to the NMa are required to present identification at the reception desk (please bring a valid passport, a valid driver’s license or a valid ID card).

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