mppmu.mpg.de CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig mppmu.mpg.de. NS

Answer

mppmu.mpg.de. 5 NS iws132a.mppmu.mpg.de. mppmu.mpg.de. 5 NS dns-3.dfn.de.

Authority

The response has no authority records.

Additional

iws132a.mppmu.mpg.de. 5 A 134.107.2.180 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0