mail.datapacket.net has no CNAME records.
Question and response
Question
dig mail.datapacket.net. NS
Answer
The response has no answer records.
Authority
datapacket.net. 299 SOA zoom.interlayer.net. hostmaster.cachecomet.com. 2025091802 3600 600 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0