Apex domains cannot have CNAME records.
Question and response
Question
dig syskaiob.com. NS
Answer
syskaiob.com. 5 NS ns1.syskaiob.com.
syskaiob.com. 5 NS ns2.syskaiob.com.
Authority
The response has no authority records.
Additional
ns1.syskaiob.com. 5 A 86.111.189.219
ns2.syskaiob.com. 5 A 5.39.63.61
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0