mx1.comverga.com has no NS records.
NS records for this zone are defined at comverga.com.
NS records for this zone are defined at comverga.com.
Question and response
Question
dig mx1.comverga.com. NS
Answer
The response has no answer records.
Authority
comverga.com. 3600 SOA ns1.comverga.com. support.comverga.com. 2026020400 600 600 86400 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0