Apex domains cannot have CNAME records.
Question and response
Question
dig verytel.ru. NS
Answer
verytel.ru. 4 NS paige.ns.cloudflare.com.
verytel.ru. 4 NS rodrigo.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
paige.ns.cloudflare.com. 4 A 108.162.194.38
paige.ns.cloudflare.com. 4 A 162.159.38.38
paige.ns.cloudflare.com. 4 A 172.64.34.38
rodrigo.ns.cloudflare.com. 4 A 108.162.195.78
rodrigo.ns.cloudflare.com. 4 A 162.159.44.78
rodrigo.ns.cloudflare.com. 4 A 172.64.35.78
paige.ns.cloudflare.com. 4 AAAA 2606:4700:50:0:0:0:a29f:2626
paige.ns.cloudflare.com. 4 AAAA 2803:f800:50:0:0:0:6ca2:c226
paige.ns.cloudflare.com. 4 AAAA 2a06:98c1:50:0:0:0:ac40:2226
rodrigo.ns.cloudflare.com. 4 AAAA 2606:4700:58:0:0:0:a29f:2c4e
rodrigo.ns.cloudflare.com. 4 AAAA 2803:f800:50:0:0:0:6ca2:c34e
rodrigo.ns.cloudflare.com. 4 AAAA 2a06:98c1:50:0:0:0:ac40:234e
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0