Let’s get in touch!

Our staff is always ready to answer your questions. We believe in direct and personal contact. This means no long queues, complex phone scripts, complicated forms and other pointless barriers; if you want to talk to us, you simply can.

Luttik Oudorp 11-13
1811MT Alkmaar, Nederland

+31 (0) 72 7513400

Contact data

Sales

Are you interested in our solutions, looking for advice or do you just want to meet informally? Do you have a good idea for a new service that you wish to market and want to discuss this with us? Are you looking for a possible partnership? Our sales department would like to come into contact with you.

E-mail
sales@cyso.com
Phone
+31 (0) 72 7513400

Servicedesk

For all technical and administrative questions regarding our services, please contact our service desk. Our service desk is open from Monday to Friday from 09.00 – 18.00 (Amsterdam time). Answers to frequently asked questions can also be found in our knowledge base (Dutch only).

E-mail
servicedesk@cyso.com
Phone
+31 (0) 72 7513400
Website
support.cyso.com (Dutch only)

Emergencies

In case of serious disruptions or an emergency outage, please call us 24×7 at +31 72 7513400. Outside office hours, you will automatically be transferred to our emergency staff. For non-urgent issues, please send an e-mail to servicedesk@cyso.com.

Other departments

Some departments have a separate e-mail address. You can reach them using the addresses below.

Peering
peering@cyso.com
NOC
noc@cyso.com
Abuse
abuse@cyso.com

Other

Chamber of Commerce
Noordwest Holland 37133395
Bank accounts
ING Bank Nederland
IBAN/SEPA NL12INGB0658178075
BIC/SWIFT INGBNL2A

ING Postbank Nederland
IBAN/SEPA NL73INGB0007653752
BIC/SWIFT INGBNL2A
VAT number
NL 8180.90.431B01
FAX number
+31 (0) 72 7513401

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