spf2.auinmeio.com.br has no NS records.
NS records for this zone are defined at auinmeio.com.br.
NS records for this zone are defined at auinmeio.com.br.
Question and response
Question
dig spf2.auinmeio.com.br. NS
Answer
The response has no answer records.
Authority
auinmeio.com.br. 1800 SOA henrik.ns.cloudflare.com. dns.cloudflare.com. 2398809120 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0