ingress2.copernica.net has no NS records.
NS records for this zone are defined at copernica.net.
NS records for this zone are defined at copernica.net.
Question and response
Question
dig ingress2.copernica.net. NS
Answer
The response has no answer records.
Authority
copernica.net. 60 SOA dns1.proxi.nl. hostmaster.copernica.com. 1774016246 14400 1800 86400 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0