contact.t13as.com has no NS records.
NS records for this zone are defined at t13as.com.
NS records for this zone are defined at t13as.com.
Question and response
Question
dig contact.t13as.com. NS
Answer
The response has no answer records.
Authority
t13as.com. 900 SOA ns-143.awsdns-17.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0