authns1.qwest.NET has no CNAME records.
Question and response
Question
dig authns1.qwest.NET. NS
Answer
The response has no answer records.
Authority
qwest.net. 64 SOA authns1.qwest.net. abuse.aup.lumen.com. 2251212000 10800 3600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0