238.91.212.in-addr.arpa CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig 238.91.212.in-addr.arpa. NS

Answer

238.91.212.in-addr.arpa. 1 NS ns1.dns-net.de. 238.91.212.in-addr.arpa. 1 NS ns7.dns-net.de.

Authority

The response has no authority records.

Additional

ns7.dns-net.de. 1 A 212.91.231.34 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0