switch.imixmaster.com has no CNAME records.
Question and response
Question
dig switch.imixmaster.com. NS
Answer
The response has no answer records.
Authority
imixmaster.com. 3430 SOA dns.imixmaster.com. hostmaster.imixmaster.com. 1531836287 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0