vip3.alidns.com has no NS records.
NS records for this zone are defined at alidns.com.
NS records for this zone are defined at alidns.com.
Question and response
Question
dig vip3.alidns.com. NS
Answer
The response has no answer records.
Authority
alidns.com. 1200 SOA ns3.aliyun.com. hostmaster.alibabadns.com. 2018052320 3600 1200 3600 360
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0