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External Data Source

Source

Regular Expression
^([0-1]([\s-./\\])?)?(\(?[2-9]\d{2}\)?|[2-9]\d{3})([\s-./\\])?([0-9]{3}([\s-./\\])?[0-9]{4}|[a-zA-Z0-9]{7}|([0-9]{3}[-][a-zA-Z0-9]{4}))