ns.dns.cv has no NS records.
NS records for this zone are defined at dns.cv.
NS records for this zone are defined at dns.cv.
Question and response
Question
dig ns.dns.cv. NS
Answer
The response has no answer records.
Authority
dns.cv. 3600 SOA ns1.dns.cv. dns.cv. 97 14400 3600 10368000 3600
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0