smtp2.eu CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig smtp2.eu. NS

Answer

smtp2.eu. 5 NS ns1.nodesecure.com. smtp2.eu. 5 NS ns2.nodesecure.de.

Authority

The response has no authority records.

Additional

ns1.nodesecure.com. 5 A 192.174.68.102 ns1.nodesecure.com. 5 AAAA 2001:67c:1bc:0:0:0:0:102 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0