An echocardiogram (also called an echo) is a type of ultrasound test that uses high-pitched sound waves that are sent through a device called a transducer.
Follow the above dialing format while making a call From Australia to United States. 1  0011 - Exit code for Australia, and is needed for making any international call from Australia. 2  1 - ISD Code or Country Code of United States. 3  Area code-There are 291 area codes in United States.
How to call Canada from United States: 1 - United States exit code. 1 + Area Code + Local Number-Overall dialing code format. Note: Canada and United States are both members of NANP (North American Numbering Plan) so when calling between these countries, 1 is used in place of the country exit code.ollow @callingcodes. We hope Country Calling Codes has been of help to you in finding the Canadian calling code for your international call from United States to Canada. Why not bookmark this page and tell a friend about this site for the next time they need to lookup an area code or international dialing code.