border1.denver4.handynetworks.com has no CNAME records.
Question and response
Question
dig border1.denver4.handynetworks.com. NS
Answer
The response has no answer records.
Authority
handynetworks.com. 1800 SOA brenda.ns.cloudflare.com. dns.cloudflare.com. 2398136107 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0