dns1.prov.site5.com has no CNAME records.
Question and response
Question
dig dns1.prov.site5.com. NS
Answer
The response has no answer records.
Authority
site5.com. 139 SOA cody.ns.cloudflare.com. dns.cloudflare.com. 2398114278 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0