Validating Mobile Ads phone numbers

[Peer Jakobsen]

Hi Google API Advisors,

I guess that Google is not allowed to share any code, but would there
be any chance of you sharing the RegEx's used internally by you to
validate Mobile Ads phone numbers per phone country. I think we got
most of them alright but it would be great to catch all malformed
numbers in our platform interface instead of catching them at the soap
call exception.

Thank you,
Peer Jakobsen