dattasites.dattaweb.com has no CNAME records.
Question and response
Question
dig dattasites.dattaweb.com. NS
Answer
The response has no answer records.
Authority
dattaweb.com. 4456 SOA ns3.hostmar.com. root.hostmar.com. 2026030413 28800 7200 2000000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0