Question and response
Question
dig spf6.comodo.com. TXT
Answer
spf6.comodo.com. 1200 TXT "v=spf1 ip4:23.236.135.28/32 ip4:23.236.135.67/32 ip4:23.236.135.70/32 ip4:23.236.135.62/32 -all"
Authority
comodo.com. 1200 NS ns1.nurd.com.
comodo.com. 1200 NS ns2.nurd.com.
Additional
ns1.nurd.com. 3600 A 199.167.64.4
ns2.nurd.com. 3600 A 104.37.177.4