Apex domains cannot have CNAME records.
Question and response
Question
dig gomel.iptel.by. NS
Answer
gomel.iptel.by. 2 NS ns.gomel.iptel.by.
gomel.iptel.by. 2 NS ns1.gomel.iptel.by.
Authority
The response has no authority records.
Additional
ns.gomel.iptel.by. 2 A 79.98.48.132
ns1.gomel.iptel.by. 2 A 79.98.48.132
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0