dns4.interedetelecom.com.br has no CNAME records.
Question and response
Question
dig dns4.interedetelecom.com.br. NS
Answer
The response has no answer records.
Authority
interedetelecom.com.br. 10800 SOA dns1.interedetelecom.com.br. root.interedetelecom.com.br. 2023101701 7200 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0