mail.infongen.net has no NS records.
NS records for this zone are defined at infongen.net.
NS records for this zone are defined at infongen.net.
Question and response
Question
dig mail.infongen.net. NS
Answer
The response has no answer records.
Authority
infongen.net. 1800 SOA ingrid.ns.cloudflare.com. dns.cloudflare.com. 2397602451 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0