区域电话，区域号码：如美国及加拿大，通常有三个阿拉伯数字的数码，分配给一个电话区，当向该区打电话时使用。

A number, often with three digits, assigned to a telephone area, as in the United States and Canada, and used when placing a call to that area.

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那个电话号码在本区域之外。

That number is outside of this zone.

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那个电话号码在本区域之外。

That number is outside of this zone.

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