_acme-challenge.cp-tel.net has no NS records.
NS records for this zone are defined at cp-tel.net.
NS records for this zone are defined at cp-tel.net.
Question and response
Question
dig cp-tel.net.acme.neonova.net. NS
Answer
The response has no answer records.
Authority
acme.neonova.net. 300 SOA acme.neonova.net. ops.neonova.net. 67790 86400 3600 604800 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0