ns1.ustdata.net has no CNAME records.
Question and response
Question
dig ns1.ustdata.net. NS
Answer
The response has no answer records.
Authority
ustdata.net. 4 SOA ns1.ustdata.net. hostmaster.ustdata.net. 2024092401 86400 3600 608400 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0