mailinblack.com CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig mailinblack.com. NS

Answer

mailinblack.com. 5 NS ns-214-b.gandi.net. mailinblack.com. 5 NS ns-96-c.gandi.net. mailinblack.com. 5 NS ns-110-a.gandi.net.

Authority

The response has no authority records.

Additional

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