On Fri, Apr 20, 2018 at 7:38 PM, Mark Andrews <marka@isc.org> wrote:
Whois contact details need to work so you can contact the zone owner when the DNS is broken for the zone.
Publishing Whois data in the zone does not work for this purpose.
This is not to discount other reasons for having a independent communications channel.
Note that the current draft gTLD WHOIS mechanism to abide by GDPR includes a communications channel that one can use to contact a domain owner, a web form. So this is ability is not being taken away for specific domains. But if someone finds out a vulnerability and needs a mass-scale delivery system to notify affected parties, then this wouldn't work. Also of notice is that if DNS resolution is working, a website or mail services points to an IP address somewhere. And that still provides reachability. So except for the broken DNS zone use case, a good number of cases have other means to achieve the same goals. Rubens