w1.starfall.com has no NS records.
NS records for this zone are defined at starfall.com.
NS records for this zone are defined at starfall.com.
Question and response
Question
dig starfall.wistia.com. NS
Answer
The response has no answer records.
Authority
wistia.com. 900 SOA ns-55.awsdns-06.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0