nserver1.vdsina.com has no CNAME records.
Question and response
Question
dig nserver1.vdsina.com. NS
Answer
The response has no answer records.
Authority
vdsina.com. 600 SOA nserver1.vdsina.com. info.vdsina.com. 2023123118 10800 3600 172800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0