ext-dc.de CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig ext-dc.de. NS

Answer

ext-dc.de. 5 NS ns.ext-dc.net. ext-dc.de. 5 NS ns.ext-dc.com. ext-dc.de. 5 NS ns.ext-dc.de.

Authority

The response has no authority records.

Additional

ns.ext-dc.de. 5 A 62.146.108.5 ns.ext-dc.de. 5 AAAA 2a01:138:101:15:0:0:0:5 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0