www.ritternet.com has no CNAME records.
Question and response
Question
dig www.ritternet.com. NS
Answer
The response has no answer records.
Authority
ritternet.com. 600 SOA ns1.ritternet.com. hostmaster.ritternet.com. 2022102097 108 360 60 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0