default._domainkey.cdfling.com has no CNAME records.
Question and response
Question
dig default._domainkey.cdfling.com. NS
Answer
The response has no answer records.
Authority
cdfling.com. 3600 SOA ns1.way3.com. dnsadmin.way3.com. 2025091609 3600 1800 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0