pfsense1.esvacloud.com has no CNAME records.
Question and response
Question
dig pfsense1.esvacloud.com. NS
Answer
The response has no answer records.
Authority
esvacloud.com. 1800 SOA clark.ns.cloudflare.com. dns.cloudflare.com. 2397875944 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0