uni-koeln.de CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig uni-koeln.de. NS

Answer

uni-koeln.de. 5 NS noc2.rrz.uni-koeln.de. uni-koeln.de. 5 NS mail1.rrz.uni-koeln.de. uni-koeln.de. 5 NS ns2.netcologne.de. uni-koeln.de. 5 NS dns-1.dfn.de.

Authority

The response has no authority records.

Additional

noc2.rrz.uni-koeln.de. 5 A 134.95.129.23 mail1.rrz.uni-koeln.de. 5 A 134.95.100.208 noc2.rrz.uni-koeln.de. 5 AAAA 2a00:a200:0:50:0:0:0:53 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0