app.cloudfinder.com has no CNAME records.
Question and response
Question
dig app.cloudfinder.com. NS
Answer
The response has no answer records.
Authority
cloudfinder.com. 274 SOA ns1.efscloud.net. domainadmin.efolder.net. 44 14400 600 3600000 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0