Follow the links below for detailed international dialing instructions for calling Ottawa, Ontario from over 25 major countries.

Each country page provides country-specific international dialing codes, international access codes, phone number formats, and other calling information. Each page also provides information for dialing Ottawa landline and mobile phone numbers, including information on phone number formats in .

If your country is not listed, please refer to these general dialing instructions for calling Ottawa, ON.

If needed, you can lookup your international access code here.

Calling from Ottawa to another country?
find outbound dialing information here

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Additional Ottawa dialing information