ns1.datanap.net has no CNAME records.
Question and response
Question
dig ns1.datanap.net. NS
Answer
The response has no answer records.
Authority
datanap.net. 3137 SOA ns1.datanap.net. hostmaster.datanap.net. 2021022301 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0