copy.ns.luotianyi.us has no NS records.
NS records for this zone are defined at luotianyi.us.
NS records for this zone are defined at luotianyi.us.
Question and response
Question
dig copy.ns.luotianyi.us. NS
Answer
The response has no answer records.
Authority
luotianyi.us. 900 SOA copy.ns.luotianyi.us. nameserver.v3tianyi.com. 2021659095 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0