ns2.netspeedba.com.br has no CNAME records.
Question and response
Question
dig ns2.netspeedba.com.br. NS
Answer
The response has no answer records.
Authority
netspeedba.com.br. 3573 SOA ns1.netspeedba.com.br. suporte.technobox.com.br. 2025062519 4800 3600 1209600 6000
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0