Important Security Notice

Security notice: Brown Envelope Company is not us. Please Read.

It has come to our attention that there is a company that sends out phony renewal notices by postal mail in a brown, official looking envelope. At no time would Canadian Domain Name Services Inc. send out such a letter; in fact, no Registrar would! It has also come to our attention that in attempting to contact the company that sent the letter, a google search is performed, and our company becomes confused with this other company. We will not print their name, because we do not want any searches leading here. We are not that company. Please check your search results carefully if you're looking for the company that sent you that notice in the brown envelope. Thank you.

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