bfmtest.dyndnsix.org has no CNAME records.
Question and response
Question
dig bfmtest.dyndnsix.org. NS
Answer
The response has no answer records.
Authority
org. 3074 SOA a0.org.afilias-nst.info. hostmaster.donuts.email. 1773134463 7200 900 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0