As should be apparent from a few of my previous blog postings (Should I use a .ca top level domain (TLD) for my Canadian site?, and Benefits of Being Recognized As a Canadian Site by Search Engines), we believe that most Canadian companies should be more diligent in ensuring that their sites are hosted on Canadian IPs otherwise without a .ca they lose out on certain advantages. In fact, do yourself a quick favour, and perform a search on Google.ca for your domain name less the www and the suffix (eg. .com), remembering to check the "Pages from Canada" radio button. Does your site appear? If not, using one of the hosting companies listed below will solve the problem very quickly.
8 ) www.edenproduction.com
This is not something that the web hosts themselves appear to be aware of or at the very least aren't promoting, soooooooooo we've done some research and here are 25 hosting companies who's client sites are (at the current time anyway) hosted on Canadian IPs. This is not a recommendation, or an assessment of their relative value, only a list. The remaining due diligence is entirely up to you.
If you know of more such domains, please leave a comment telling us their domain, and we'll check it out and possibly add it to our master list. The closer we get to a comprehensive list, the better.