contact.hilen.net has no NS records.
NS records for this zone are defined at hilen.net.
NS records for this zone are defined at hilen.net.
Question and response
Question
dig contact.hilen.net. NS
Answer
The response has no answer records.
Authority
hilen.net. 900 SOA ns-265.awsdns-33.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0