What number needs to be in front of a number when calling America from Australia?

The international access code from the US is 011. The country code for Australia is 61. When making an international call, always drop the first zero of the number you want to call. All Australian mobile numbers start with "04" -- e.g. 0405 123 456.

Therefore, to call the above Australian mobile number from the US, dial as follows:

011 61 405 123 456.

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