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National conventions for writing telephone numbers

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The conventions for writing telephone numbers can vary by country, but there are some common formats that are widely recognized. Here are some general guidelines for writing telephone numbers: ### 1. **Country Codes**: - When writing international telephone numbers, include the country code, prefixed by a plus sign (+) or double zero (00). - Example: +1 for the United States, +44 for the United Kingdom. ### 2.

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