yangyang.ns.giantpanda.com has no NS records.
NS records for this zone are defined at giantpanda.com.
NS records for this zone are defined at giantpanda.com.
Question and response
Question
dig yangyang.ns.giantpanda.com. NS
Answer
The response has no answer records.
Authority
giantpanda.com. 1800 SOA stevie.ns.cloudflare.com. dns.cloudflare.com. 2398215528 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0