mail.martinstelecomfibra.com.br has no NS records.
NS records for this zone are defined at martinstelecomfibra.com.br.
NS records for this zone are defined at martinstelecomfibra.com.br.
Question and response
Question
dig mail.martinstelecomfibra.com.br. NS
Answer
The response has no answer records.
Authority
martinstelecomfibra.com.br. 300 SOA ns1.martinstelecomfibra.com.br. hostmaster.martinstelecomfibra.com.br. 2026022745 10800 3600 2419200 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0