What departments does SIDN have?

SIDN has employees across 15 departments including Engineering, Information Security, Finance, Entrepreneurship, Accounting.

What is the largest department at SIDN?

The largest department at SIDN is Engineering with 11 employees.

Where are SIDN employees located globally?

SIDN has employees across 1 continents and 2 countries including Netherlands, Spain.

How has SIDN's team size changed over time?

SIDN's team has decreased from approximately 121 to 120 employees based on available data.

SIDN Employee Directory

Technology, Information and InternetGelderland, Netherlands51-200 Employees

SIDN is a technology and internet infrastructure organization based in Arnhem, Gelderland, Netherlands. It operates the .nl domain by registering names and ensuring they resolve for users worldwide, handling a vast daily volume of search queries and supporting reliable email delivery. The organization develops services and solutions built on secure domains and digital identities to support safer and more convenient online life.

Its customers include domain registrants and internet users around the world, with a primary focus on the stability and accessibility of the .nl ecosystem and its DNS. SIDN Labs conducts research to devise new technologies and systems that improve the resilience and security of the .nl domain, the DNS, and broader internet infrastructure. Through the SIDN Fund, the organization supports social initiatives aimed at promoting internet use and addressing related negative effects.

SIDN Global Highlights

Europe
105

Netherlands
104
Spain
1

SIDN's Leadership

R. M.
Chief Executive Officer
Mobile Phone
Email
L. V. D. B.
Cfo
Mobile Phone
Email
L. B.
Chief Technology Officer
Mobile Phone
Email
F. S.
Chief Information Security Officer (ciso)
Mobile Phone
Email
C. V. D. W.
Medior Financial Controller
Mobile Phone
Email
M. V. O.
Business Controller
Mobile Phone
Email
G. K.
Manager Transitie .Nl, It & Security
Mobile Phone
Email
M. H.
Marketing Manager & Product Owner
Mobile Phone
Email

SIDN Employee Metrics

100%

50%

0%

2026

2025

Engineering
Information Security
Product Management
Accounting
Administrative
Other

Contact profiles from SIDN

Name

Title

Contact

Location

Last Update

L. B.
Chief Technology Officer
Mobile Phone
Email
Aug 28, 2026
F. S.
Chief Information Security Officer (ciso)
Mobile Phone
Email
Netherlands, Utrecht
Mar 24, 2026
L. V. D. B.
Cfo
Mobile Phone
Email
Netherlands, Gelderland
Apr 17, 2026
R. M.
Chief Executive Officer
Mobile Phone
Email
Netherlands
Sep 01, 2026
C. V. D. W.
Medior Financial Controller
Mobile Phone
Email
Netherlands, Gelderland
Feb 10, 2026
M. V. O.
Business Controller
Mobile Phone
Email
Apr 15, 2026
G. K.
Manager Transitie .Nl, It & Security
Mobile Phone
Email
Netherlands, Gelderland
Apr 17, 2026
M. H.
Marketing Manager & Product Owner
Mobile Phone
Email
Netherlands, Gelderland
Jul 28, 2026
P. P.
Lead Product Owner/ Lead Product Manager - Registry Services
Mobile Phone
Email
Netherlands, Gelderland Province
Aug 01, 2026
M. S.
Product Owner
Mobile Phone
Email
Sep 02, 2026

Frequently Asked Questions

What is SIDN known for?

SIDN was founded in 1996 and operates in the Technology, Information and Internet industry. You can contact SIDN's main corporate office by phone at

+31-26-352-****

. Explore SIDN's company overview page for more information.

What is SIDN's most common email format?

SIDN employees' email format typically follows the pattern of First.Last@sidn.nl. Trying to find reliable and up-to-date employee contact data? Find more SIDN email formats with LeadIQ.

How many employees does SIDN have currently?

SIDN has approximately 133 employees as of August 2026. These team members are located across 1 continents, including Europe.

Who are SIDN's key employees and leadership?

As of August 2026, SIDN's key employees include:

Chief Executive Officer: R. M.
Cfo: L. V. D. B.
Chief Technology Officer: L. B.
Chief Information Security Officer (ciso): F. S.
Medior Financial Controller: C. V. D. W.

Looking for contact data? Unlock accurate emails and phone numbers for your ideal prospects with LeadIQ.

Everything for prospecting,
in one platform.

What you can expect from LeadIQ:

B2B data verified in real-time
Sync data to your CRM, & add it to an outreach sequence in one click
Integrations with your tech stack for optimal efficiency
A patented AI cold email generator
Account & contact-level job change tracking

SIDN Employee Directory

Find SIDN employees' phone numbers or email addresses

Name search is limited — try advanced search instead