Yes, it's not 123.ca, but it's the next best thing! It's short, really easy to remember, and more flexible than a retiree's morning schedule. 0123.ca's possible uses are only limited by your imagination! Or, you know, by your budget, time availability, and coding skills... In any case, this is one Canadian domain to get your hands on (before I get a job, become financially stable, learn how to properly appraise domains, and start jacking up my prices...)!
If you're interested, message me here on DN.ca or email me at firstname.lastname@example.org.