Here’s a non-exhaustive list of major companies/brands that use a 2-character .CA domain:
Used as their primary domain
AW.ca – A&W
CN.ca – Canada National Railway Company
GM.ca – General Motors
IA.ca – Industrial Alliance Financial Group
IG.ca – Investor’s Group Wealth Management
VW.ca – Volkswagen
Redirects to another .CA
YP.ca – YellowPages (redirects to yellowpages.ca/)
PJ.ca – Pages Jaunes (redirects to pagesjaunes.ca/)
PC.ca – President’s Choice (redirects to presidentschoice.ca/)
UA.ca – Under Armour (redirects to underarmour.ca/en-ca/
DQ.ca – Dairy Queen (redirects to dairyqueen.com/en-ca/)
Redirects to a .COM
TD.ca – Toronto Dominion (redirects to td.com/ca/en/personal-banking/)
DT.ca – Direct Travel (redirects to dt.com/en-ca/)
HP.ca – Hewlett-Packard (redirects to hp.com/ca-en/home.html)
LG.ca – LG Group (redirects to lg.com/ca_en)
WW.ca – Weight Watchers (redirects to weightwatchers.com/ca/en/)