ftp.walkerfire.org has no CNAME records.
Question and response
Question
dig ftp.walkerfire.org. NS
Answer
The response has no answer records.
Authority
walkerfire.org. 3384 SOA ns1.way3.com. dnsadmin.way3.com. 2024121207 3600 1800 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0