dns2.supremedns.com has no NS records.
NS records for this zone are defined at supremedns.com.
NS records for this zone are defined at supremedns.com.
Question and response
Question
dig dns2.supremedns.com. NS
Answer
The response has no answer records.
Authority
supremedns.com. 2560 SOA ns1.supremedns.com. hostmaster.supremedns.com. 1773564605 16384 2048 1048576 2560
Additional
The response has no additional records.