tieinterceptor1b.dub1.discourse.cloud has no CNAME records.
Question and response
Question
dig tieinterceptor1b.dub1.discourse.cloud. NS
Answer
The response has no answer records.
Authority
dub1.discourse.cloud. 2403 SOA ns1.discourse.cloud. hostmaster.discourse.org. 1772654134 16384 2048 1048576 2560
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0