@Suiseiseki When I was a child I remember we used to receive such a big book every year from the government. We used to call it "Directory" in my country and that book was similar (if not the same) to the approach you purpose. In that time was OK because we didn't use to have mobile phones. It was more difficult to locate people sometimes but it was more or less OK.
Now I have the feeling that sharing your phone number in a public site is like making things easier to spammers, I made the mistake of sharing my contact info in my CV and now I am receiving spam and scam calls all the time. This is making me consider to let my current number like a honeypot for scam and spam calls and get a new number just to give for people I trust.
Of course sharing information in a private company where the main business is selling your data is a lot of worse.