leticia.virtex.com.br has no NS records.
NS records for this zone are defined at virtex.com.br.
NS records for this zone are defined at virtex.com.br.
Question and response
Question
dig leticia.virtex.com.br. NS
Answer
The response has no answer records.
Authority
virtex.com.br. 3600 SOA leticia.virtex.com.br. virtex.com.br.virtex.com.br. 298094746 28800 7200 604800 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0