ns1.dnai.com has no CNAME records.
Question and response
Question
dig ns1.dnai.com. NS
Answer
The response has no answer records.
Authority
dnai.com. 138 SOA master.dns.rcn.net. hostmaster.rcn.com. 2026022101 10800 3600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0