michael.treshna.com has no CNAME records.
Question and response
Question
dig michael.treshna.com. NS
Answer
The response has no answer records.
Authority
treshna.com. 1307 SOA ns1.linode.com. hostmaster.treshna.com. 2021000078 14400 14400 1209600 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0