mx1.brdrive.net has no NS records.
NS records for this zone are defined at brdrive.net.
NS records for this zone are defined at brdrive.net.
Question and response
Question
dig mx1.brdrive.net. NS
Answer
The response has no answer records.
Authority
brdrive.net. 900 SOA ns4.brdrive.net. suporte.brdrive.net. 2026021600 3600 900 604800 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0