us.api.cloudfinder.com has no CNAME records.
Question and response
Question
dig us.api.cloudfinder.com. NS
Answer
The response has no answer records.
Authority
cloudfinder.com. 1691 SOA ns1.efscloud.net. domainadmin.efolder.net. 44 14400 600 3600000 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0