database.sfnet.com.br has no NS records.
NS records for this zone are defined at sfnet.com.br.
NS records for this zone are defined at sfnet.com.br.
Question and response
Question
dig mysql.sfnet.com.br. NS
Answer
The response has no answer records.
Authority
sfnet.com.br. 3600 SOA master.frionline.com.br. adtech.frionline.com.br. 2026022000 3600 600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0