The fact most WHOIS is private these days makes it more or less useless.
I think rdap with a request/response authentication on the requestor but that the provider can't mask would be more practical.
Also requiring that registrars keep a history of changes from the time the domain was first registered would be very helpful vs relying on 3rd parties that cache the data over time (and charge for it) like domaintools.
Unlikely that this is in the protocol but I think it would better the entire ecosystem.
I think rdap with a request/response authentication on the requestor but that the provider can't mask would be more practical.
Also requiring that registrars keep a history of changes from the time the domain was first registered would be very helpful vs relying on 3rd parties that cache the data over time (and charge for it) like domaintools.
Unlikely that this is in the protocol but I think it would better the entire ecosystem.