spf.luke9050.com.br has no NS records.
NS records for this zone are defined at luke9050.com.br.
NS records for this zone are defined at luke9050.com.br.
Question and response
Question
dig spf.luke9050.com.br. NS
Answer
The response has no answer records.
Authority
luke9050.com.br. 1800 SOA carioca.ns.cloudflare.com. dns.cloudflare.com. 2397043690 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0