graylog.sninternet.com.br has no NS records.
NS records for this zone are defined at sninternet.com.br.
NS records for this zone are defined at sninternet.com.br.
Question and response
Question
dig graylog.sninternet.com.br. NS
Answer
The response has no answer records.
Authority
sninternet.com.br. 3600 SOA ns3.sninternet.com.br. cgr.sninternet.com.br. 1604684219 3600 600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0