hv1-extdns-003.inf.virt.ja.net has no NS records.
NS records for this zone are defined at virt.ja.net.
NS records for this zone are defined at virt.ja.net.
Question and response
Question
dig hv1-extdns-003.inf.virt.ja.net. NS
Answer
The response has no answer records.
Authority
virt.ja.net. 60 SOA sdc-ipam-001.inf.virt.ja.net. netman.virt.ja.net. 4143 7200 1800 2419200 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0