mx.networktelecomunicacoes.com.br has no NS records.
NS records for this zone are defined at networktelecomunicacoes.com.br.
NS records for this zone are defined at networktelecomunicacoes.com.br.
Question and response
Question
dig mx.networktelecomunicacoes.com.br. NS
Answer
The response has no answer records.
Authority
networktelecomunicacoes.com.br. 43200 SOA srv1.networktelecomunicacoes.com.br. postmaster.networktelecomunicacoes.com.br. 2023122200 3600 900 1209600 43200
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0