phone numbers not valid

[twk-b]

phone_formats: ['###-###-####'],

this format is not really valid, needs to be

['200-200-0000']
where:
0 replaced by 0-9
2 replaced by 2-9

otherwise the number generated is not valid the first number in the area code and the prefix cannot be 0 or 1 (ie the ones replaced with 2s above)