mutua.es CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig mutua.es. NS

Answer

mutua.es. 5 NS dns1.mutua.es. mutua.es. 5 NS dns2.mutua.es. mutua.es. 5 NS dns3.mutua.es.

Authority

The response has no authority records.

Additional

dns1.mutua.es. 5 A 5.159.15.11 dns2.mutua.es. 5 A 5.159.8.11 dns3.mutua.es. 5 A 52.58.140.67 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0