You can call them from outside Canada, its no problem. People do it all the time. There is no 45 day rule but its better to make minimum calls and call only if necessary.
The best way to know details of your Visa Office is to call CIC or e-mail them. Another way to know case details is to order GCMS notes, if you have not already I suggest you order ASAP, take 30-40 days to arrive.
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You can know your Visa Office by sending an email to
CPC-CTD-Ottawa@cic.gc.ca
This is the email format they require:
IMPORTANT: You must provide us with your application number in the subject line of your email and include in the body of your email the following information:
* Surname and Given name(s)
* Date of birth (YYYY-MM-DD)
* Unique Client Identifier (UCI) number / Client ID number
* Category of Immigration (CEC, Provincial Nominee, Family Class, Federal Skilled Worker, Temporary Resident)
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You can call CIC on - 1-613-944-4000.
Better call before Canadian noon time, i.e early working hours, wait time is less. Choose options as directed (it mostly goes 111112), have your application number ready, you will be asked for it, and after listening to automated response select the option "7" to speak to an agent. Ask specific questions like "I am calling to know my Visa office" or specifically like "have I passed eligibility?" etc. Be kind and humble, most agents are nice, ask specific questions, don't ask things like how long till I get PR etc.
For GCMS, you can use third-party websites like
https://www.getgcms.com/.
