dsinn.dsinn.com has no CNAME records.
Question and response
Question
dig dsinn.dsinn.com. NS
Answer
The response has no answer records.
Authority
dsinn.com. 1343 SOA fattouche.ns.cloudflare.com. dns.cloudflare.com. 2396899739 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0