jp.service.netease.com has no NS records.
NS records for this zone are defined at netease.com.
NS records for this zone are defined at netease.com.
Question and response
Question
dig jp.service.netease.com. NS
Answer
The response has no answer records.
Authority
netease.com. 60 SOA ns4.nease.net. admin.nease.net. 20810308 7200 1800 1209600 60
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0