c224.dattaweb.com has no CNAME records.
Question and response
Question
dig c224.dattaweb.com. NS
Answer
The response has no answer records.
Authority
dattaweb.com. 10270 SOA ns3.hostmar.com. root.hostmar.com. 2026030737 28800 7200 2000000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0