Thank you for your inquiry.
Currently, CIRA is having an issue with their WHOIS data. A portion of dot-ca domains are listed as "available" even though they are actually already registered.
The following was a notice we have received from CIRA at 09:22 EST:
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WHOIS Synchronization issue
Our technical staff is investigating the cause of the WHOIS synchronization issues. We are working to restore service within the hour.
I will send an update when the cause is identified.
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