ns4.telemar.net.br has no NS records.
NS records for this zone are defined at telemar.net.br.
NS records for this zone are defined at telemar.net.br.
Question and response
Question
dig ns4.telemar.net.br. NS
Answer
The response has no answer records.
Authority
telemar.net.br. 1200 SOA ns4.telemar.net.br. root.ns4.telemar.net.br. 2026012901 1800 3600 120960 1200
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0