reverse.odns.fr CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig reverse.odns.fr. NS

Answer

reverse.odns.fr. 5 NS ns1.o2switch.net. reverse.odns.fr. 5 NS ns2.o2switch.net.

Authority

The response has no authority records.

Additional

ns1.o2switch.net. 5 A 109.234.160.5 ns2.o2switch.net. 5 A 109.234.161.5 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0