Apex domains cannot have CNAME records.
Question and response
Question
dig launchgmbh.com. NS
Answer
launchgmbh.com. 5 NS ns.launchgmbh.com.
launchgmbh.com. 5 NS ns.launchgmbh.de.
launchgmbh.com. 5 NS ns1.m.launch.gmbh.
Authority
The response has no authority records.
Additional
ns.launchgmbh.de. 5 A 213.133.105.6
ns.launchgmbh.com. 5 A 193.47.99.3
ns1.m.launch.gmbh. 5 A 88.99.193.223
ns.launchgmbh.de. 5 AAAA 2a01:4f8:d0a:2004:0:0:0:2
ns.launchgmbh.com. 5 AAAA 2001:67c:192c:0:0:0:add:a3
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0