spf.flashstart.com has no CNAME records.
Question and response
Question
dig spf.flashstart.com. NS
Answer
The response has no answer records.
Authority
flashstart.com. 400 SOA ns11.domaincontrol.com. dns.jomax.net. 2026021800 28800 7200 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0