166.216.65.in-addr.arpa CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig 166.216.65.in-addr.arpa. NS

Answer

166.216.65.in-addr.arpa. 5 NS auth100.ns.uu.net. 166.216.65.in-addr.arpa. 5 NS auth00.ns.uu.net.

Authority

The response has no authority records.

Additional

auth00.ns.uu.net. 4 A 198.6.1.65 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0