mercaterra.es CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig mercaterra.es. NS

Answer

mercaterra.es. 5 NS ns2.mercaterra.es. mercaterra.es. 5 NS ns1.mercaterra.es.

Authority

The response has no authority records.

Additional

ns1.mercaterra.es. 5 A 51.68.228.220 ns2.mercaterra.es. 5 A 51.68.228.219 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0