ns2.directwifi.com.br has no CNAME records.
Question and response
Question
dig ns2.directwifi.com.br. NS
Answer
The response has no answer records.
Authority
directwifi.com.br. 1064 SOA ns1.directwifi.com.br. hostmaster.directwifi.com.br. 2025122218 7200 2400 1209600 57600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0