[DNSOP] definitions of "public DNS Service"

[George Michaelson <[e-mail]>]

My Colleague George Kuo asked me for definitions of public DNS
service. not "public DNS" but the trigram "public DNS service"

Colloquially we understand this reasonably well. It is in the space of
what Google, quad9, CloudFlare and others do. The various clean DNS
feeds people subscribe to, it is the functional role of a recursive,
but to the public, yet somehow not the bad one of an open DNS resolver
being abused to do DDoS: its the conscious service offering of a
recursive/cache/forwarder in the public view, a declared intent.

A Google search lists (some of) them by name and IP.

I asked "Dr Johnson" (Paul Hoffman) why it was not in his dictionary,
and he said he is but the humble scribe, and words appear in the
dictionary when he is directed.

What does the WG feel? The definitions of the "elements" of a public
DNS service are of course defined. But not (I feel) the "collected
whole" which most definitely exists, out there.

(if anyone feels this is adequately defined, please correct me and share a URL)

-George