ns352.dnsever.com has no NS records.
NS records for this zone are defined at dnsever.com.
NS records for this zone are defined at dnsever.com.
Question and response
Question
dig ns352.dnsever.com. NS
Answer
The response has no answer records.
Authority
dnsever.com. 14400 SOA ns7.dnsever.com. admin.dnsever.com. 1747039760 86400 600 1209600 14400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0