piggy.vodien.com has no NS records.
NS records for this zone are defined at vodien.com.
NS records for this zone are defined at vodien.com.
Question and response
Question
dig piggy.vodien.com. NS
Answer
The response has no answer records.
Authority
vodien.com. 1800 SOA hope.ns.cloudflare.com. dns.cloudflare.com. 2398508863 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0