I have never had a problem making my real contact info available for whois searches. Since my office is at home I have lately been thinking about changing my physical address with a P.O. Box. Is this an acceptable practice? What about the phone number - is providing one mandatory? The ICANN website lists all these as requirements (address, phone, etc). However, it's not clear to me if failing to provide one detail (such as phone #) is a violation of their policy and if so what the consequences could be.