Choose what details added to IP address whois.

Allow customers to choose what details added to IP address whois look return. Although you could restrict to unique names to avoid passing off / trademark conflict etc. as well as rule that need to non no offensive etc. but just not defaulting to customer billing / account name, let customer be 'ex directory'. Most IPs just have c/o of ISP details on whois, and on signing up customer might assume you do same.