Apex domains cannot have CNAME records.
Question and response
Question
dig steyo.com. NS
Answer
steyo.com. 1 NS ns1.mijn.host.
steyo.com. 1 NS ns3.mijn.host.
steyo.com. 1 NS ns2.mijn.host.
Authority
The response has no authority records.
Additional
ns1.mijn.host. 2 A 5.254.117.200
ns2.mijn.host. 2 A 217.180.14.14
ns3.mijn.host. 2 A 83.96.241.95
ns1.mijn.host. 2 AAAA 2a03:5180:7:2:13af:27fb:f741:1
ns2.mijn.host. 2 AAAA 2a11:4881:1:4881:0:0:0:1
ns3.mijn.host. 2 AAAA 2a02:348:5e6:1:0:0:0:b6a0
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0