Apex domains cannot have CNAME records.
Question and response
Question
dig aspectra.com. NS
Answer
aspectra.com. 2 NS nsu.dnsnode.net.
aspectra.com. 2 NS ns2.aspectra.com.
aspectra.com. 2 NS ns1.aspectra.com.
aspectra.com. 2 NS europe1.dnsnode.net.
Authority
The response has no authority records.
Additional
ns1.aspectra.com. 2 A 128.127.50.136
ns2.aspectra.com. 2 A 185.27.186.200
nsu.dnsnode.net. 5 A 185.42.137.98
europe1.dnsnode.net. 5 A 194.58.196.32
ns1.aspectra.com. 2 AAAA 2a02:e0c0:1f00:0:0:0:0:136
ns2.aspectra.com. 2 AAAA 2a02:e0c0:2f00:0:0:0:0:200
nsu.dnsnode.net. 5 AAAA 2a01:3f0:400:0:0:0:0:32
europe1.dnsnode.net. 5 AAAA 2a01:3f1:832:0:0:0:0:53
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0