post02.itau.com.br has no NS records.
NS records for this zone are defined at itau.com.br.
NS records for this zone are defined at itau.com.br.
Question and response
Question
dig post02.itau.com.br. NS
Answer
The response has no answer records.
Authority
itau.com.br. 300 SOA asia1.akam.net. postmaster.itau.com.br. 2022022013 300 1200 604800 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0