dns1.supremebox.com has no CNAME records.
Question and response
Question
dig dns1.supremebox.com. NS
Answer
The response has no answer records.
Authority
supremebox.com. 1958 SOA dns1.supremebox.com. hostmaster.supremebox.com. 1772442604 16384 2048 1048576 2560
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0