bylight.adifactory.com has no NS records.
NS records for this zone are defined at adifactory.com.
NS records for this zone are defined at adifactory.com.
Question and response
Question
dig bylight.adifactory.com. NS
Answer
The response has no answer records.
Authority
adifactory.com. 3601 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1769613057 43200 3600 604800 3601
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0