Phone numbers

I want to have suggestions from you guys, that if I can post everyone phone numbers on the websites. This is for group works or in need of contacting other people but don't have his/her phone number.
I am asking this first because there might have some troubles if I post everyone phone numbers - -
But if you guys vote that I can post then I will use the language that only we know so that other people that come in don't know whose numbers is whose-*-

Please comment duay na krub about your suggestions

Thank you krub~