143.239.194.in-addr.arpa CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig 143.239.194.in-addr.arpa. NS

Answer

143.239.194.IN-ADDR.ARPA. 2 NS auth05.ns.tdc.net. 143.239.194.IN-ADDR.ARPA. 2 NS auth06.ns.tdc.net.

Authority

The response has no authority records.

Additional

. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0