mail.supremeserver1.com has no NS records.
NS records for this zone are defined at supremeserver1.com.
NS records for this zone are defined at supremeserver1.com.
Question and response
Question
dig mail.supremeserver1.com. NS
Answer
The response has no answer records.
Authority
supremeserver1.com. 2560 SOA dns1.supremeserver1.com. hostmaster.supremeserver1.com. 1772463609 16384 2048 1048576 2560
Additional
The response has no additional records.