ns1.netspeedba.com.br.netspeedba.com.br has no A records.
Question and response
Question
dig ns1.netspeedba.com.br.netspeedba.com.br. A
Answer
The response has no answer records.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0