newmail.bsi.com.br has no NS records.
NS records for this zone are defined at bsi.com.br.
NS records for this zone are defined at bsi.com.br.
Question and response
Question
dig newmail.bsi.com.br. NS
Answer
The response has no answer records.
Authority
bsi.com.br. 86400 SOA ns1.bsi.com.br. root.dedi.4296494.bsi.com.br. 2026030900 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0