Apex domains cannot have CNAME records.
Question and response
Question
dig f.htel.cc. NS
Answer
f.htel.cc. 5 NS ns.noc.mol.net.ua.
f.htel.cc. 5 NS ns1.mol.net.ua.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0