rb.steadfastdns.net has no NS records.
NS records for this zone are defined at steadfastdns.net.
NS records for this zone are defined at steadfastdns.net.
Question and response
Question
dig rb.steadfastdns.net. NS
Answer
The response has no answer records.
Authority
steadfastdns.net. 300 SOA r0.steadfastdns.net. root.steadfast.net. 2025030401 86400 86400 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0