192-140-91-253.itop.net.br has no CNAME records.
Question and response
Question
dig 192-140-91-253.itop.net.br. NS
Answer
The response has no answer records.
Authority
itop.net.br. 248 SOA auto1.itop.net.br. auto2.itop.net.br. 2022117127 10800 3600 2419200 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0