c-u-s-t-o-m-e-r--dynamic-186.235.83.6.brava.net.br has no NS records.
NS records for this zone are defined at brava.net.br.
NS records for this zone are defined at brava.net.br.
Question and response
Question
dig c-u-s-t-o-m-e-r--dynamic-186.235.83.6.brava.net.br. NS
Answer
The response has no answer records.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0