ftp.mojavewifi.com has no CNAME records.
Question and response
Question
dig ftp.mojavewifi.com. NS
Answer
The response has no answer records.
Authority
mojavewifi.com. 4727 SOA ns1.mojavewifi.com. service.mojavewifi.com. 2026010206 10800 3600 1209600 38400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0