dynamic.n4telecom.com.br has no NS records.
NS records for this zone are defined at n4telecom.com.br.
NS records for this zone are defined at n4telecom.com.br.
Question and response
Question
dig dynamic.n4telecom.com.br. NS
Answer
The response has no answer records.
Authority
n4telecom.com.br. 172800 SOA ns1.he.net. hostmaster.he.net. 2026021600 86400 7200 3600000 172800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0