ns.hostnexus.com has no CNAME records.
Question and response
Question
dig ns.hostnexus.com. NS
Answer
The response has no answer records.
Authority
hostnexus.com. 409 SOA ns2.hostnexus.com. bollox.jjj.com. 2024070301 10800 3600 604800 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0