unused1.netledger.com has no NS records.
NS records for this zone are defined at netledger.com.
NS records for this zone are defined at netledger.com.
Question and response
Question
dig unused1.netledger.com. NS
Answer
The response has no answer records.
Authority
netledger.com. 300 SOA ns1.p202.dns.oraclecloud.net. hostmaster.netledger.com. 8 3600 600 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0