ns1.nameserverz.com has no NS records.
NS records for this zone are defined at nameserverz.com.
NS records for this zone are defined at nameserverz.com.
Question and response
Question
dig ns1.nameserverz.com. NS
Answer
The response has no answer records.
Authority
nameserverz.com. 86400 SOA ns1.nameserverz.com. dnsadmin.nameserverz.com. 1773106776 28800 3600 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0