conteudo.fbnet.com.br has no NS records.
NS records for this zone are defined at fbnet.com.br.
NS records for this zone are defined at fbnet.com.br.
Question and response
Question
dig pages.rdstation.com.br. NS
Answer
The response has no answer records.
Authority
rdstation.com.br. 900 SOA ns-132.awsdns-16.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0