Apex domains cannot have CNAME records.
Question and response
Question
dig DASHASENDER.RU. NS
Answer
DASHASENDER.RU. 5 NS ns1.nameself.com.
DASHASENDER.RU. 5 NS ns2.nameself.com.
Authority
The response has no authority records.
Additional
ns1.nameself.com. 5 A 87.242.73.100
ns1.nameself.com. 5 A 88.212.207.45
ns2.nameself.com. 5 A 88.212.208.183
ns2.nameself.com. 5 A 95.213.146.179
ns1.nameself.com. 5 AAAA 2a00:15f8:c001:3:0:0:0:144
ns2.nameself.com. 5 AAAA 2a02:2100:e001:4:0:0:0:203
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0