Important Security Notice

Security notice. Please Read

It has come to our attention that there is a phone scam going on where a person will call you saying they are from Canadian Domain Name service or from a tech firm. They will say that your computer is compromised with viruses and that they need access to your computer. Under no cercumstances should you allow anyone access to your computer. They have been giving out our number as a call back number. CADNS will never call you asking to gain access to your computer or asking you for your password.

Frequently Asked Questions

The answer to your question might already be answered in our Frequently Asked Questions. Please check there first. If your issue is not resolved from our FAQ section, please use one of the contact methods below and we will be happy to help you.

Phone / Fax

Telephone Support Hours Monday - Friday: 9:00am to 6:00pm Eastern Time

Local Durham Region

1(905) 436-6814

Toll Free

1(844) 473-8096


1(416) 946-1223

Mailing Address

Canadian Domain Name Services Inc.
1233 Milburn St
Peterborough, ON K9H 6P3

Question: What's the most efficient method of getting help with something to do with my .ca domain registration?

Answer: For issues with registering a .ca domain name, or for an existing .ca domain registration, E-mail is the best method if the problem is not of a severe or critical nature. By all means contact us by phone if you have a critical problem with your .ca domain registration, or if you wish to explain the problem to one of our technical staff.




Now you can call us on Skype!
After phone support hours? If we're on Skype, use our username to contact us on Skype


Just make sure to identify yourself as a CDNS customer if you make a request to Add Contact