ns4.aname.net has no NS records.
NS records for this zone are defined at aname.net.
NS records for this zone are defined at aname.net.
Question and response
Question
dig ns4.aname.net. NS
Answer
The response has no answer records.
Authority
aname.net. 1800 SOA cash.ns.cloudflare.com. dns.cloudflare.com. 2399257179 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0