> You have asked the wrong question.

I figured it was something like that.

    dig @1.1.1.1 _dns.resolver.arpa SVCB

    ;; ANSWER SECTION:
    _dns.resolver.arpa.     300     IN      SVCB    1 one.one.one.one.
     alpn="h2,h3" port=443 ipv4hint=1.1.1.1,1.0.0.1
      ipv6hint=2606:4700:4700::1111,2606:4700:4700::1001 key7="/dns-query{?dns}"

    _dns.resolver.arpa.     300     IN      SVCB    2 one.one.one.one.
     alpn="dot" port=853 ipv4hint=1.1.1.1,1.0.0.1
      ipv6hint=2606:4700:4700::1111,2606:4700:4700::1001