bdl85aq.19818430t.spideraf.com has no NS records.
NS records for this zone are defined at spideraf.com.
NS records for this zone are defined at spideraf.com.
Question and response
Question
dig bdl85aq.19818430t.spideraf.com. NS
Answer
The response has no answer records.
Authority
spideraf.com. 900 SOA ns-1757.awsdns-27.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0