www.twcnc.com has no CNAME records.
Question and response
Question
dig www.twcnc.com. NS
Answer
The response has no answer records.
Authority
twcnc.com. 10800 SOA ns1.twcable.com. hostmaster.pblpdns01.twcable.com. 2025032604 14400 7200 604800 14400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0