mail2.nexiwave.com has no NS records.
NS records for this zone are defined at nexiwave.com.
NS records for this zone are defined at nexiwave.com.
Question and response
Question
dig mail2.nexiwave.com. NS
Answer
The response has no answer records.
Authority
nexiwave.com. 300 SOA ns1.name.com. hostmaster.nsone.net. 1658915756 7200 3600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0