prisoner.iana.org has no NS records.
NS records for this zone are defined at iana.org.
NS records for this zone are defined at iana.org.
Question and response
Question
dig prisoner.iana.org. NS
Answer
The response has no answer records.
Authority
iana.org. 3600 SOA sns.dns.icann.org. noc.dns.icann.org. 2025121402 7200 3600 1209600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0