Apex domains cannot have CNAME records.
Question and response
Question
dig vds.sh. NS
Answer
vds.sh. 5 NS ns1.vds.sh.
vds.sh. 5 NS ns2.vds.sh.
Authority
The response has no authority records.
Additional
ns1.vds.sh. 5 A 45.12.7.242
ns2.vds.sh. 5 A 45.12.7.243
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0