Question and response
Question
dig _spfv6.comcast.net. TXT
Answer
_spfv6.comcast.net. 7200 TXT "v=spf1 ip6:2001:558:fd01:2bb4::/64 ip6:2001:558:fd00:56::/64 ip6:2001:558:fd02:2446::/64 ~all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0