patch.dedicated.theory7.net has no CNAME records.
Question and response
Question
dig patch.dedicated.theory7.net. NS
Answer
The response has no answer records.
Authority
dedicated.theory7.net. 3428 SOA dns.theory7.net. hostmaster.dedicated.theory7.net. 2026021202 10800 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0