spf.emailsecurity.bracnet.net has no AAAA records.
Question and response
Question
dig spf.emailsecurity.bracnet.net. AAAA
Answer
The response has no answer records.
Authority
spf.emailsecurity.bracnet.net. 3600 SOA dns1.bdmail.net. root.dns1.bdmail.net. 2 10800 3600 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0