yangyang.ns.giantpanda.com has no SRV records.
Question and response
Question
dig yangyang.ns.giantpanda.com. SRV
Answer
The response has no answer records.
Authority
giantpanda.com. 1800 SOA stevie.ns.cloudflare.com. dns.cloudflare.com. 2397551725 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0