_spf1.rabbitmail.io has no NS records.
NS records for this zone are defined at rabbitmail.io.
NS records for this zone are defined at rabbitmail.io.
Question and response
Question
dig _spf1.rabbitmail.io. NS
Answer
The response has no answer records.
Authority
rabbitmail.io. 1800 SOA aria.ns.cloudflare.com. dns.cloudflare.com. 2398023928 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0