spf.emailemnuvem.com.br has no NS records.
NS records for this zone are defined at emailemnuvem.com.br.
NS records for this zone are defined at emailemnuvem.com.br.
Question and response
Question
dig spf.emailemnuvem.com.br. NS
Answer
The response has no answer records.
Authority
emailemnuvem.com.br. 2560 SOA ns1.skymail.net.br. hostmaster.emailemnuvem.com.br. 1719876728 16384 2048 1048576 2560
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0