manin.backgronds.com has no NS records.
NS records for this zone are defined at backgronds.com.
NS records for this zone are defined at backgronds.com.
Question and response
Question
dig manin.backgronds.com. NS
Answer
The response has no answer records.
Authority
backgronds.com. 10800 SOA ns1.bviabc.com. postmaster.bviabc.com. 2025111912 28800 7200 1209600 10800
Additional
. 0 OPT ; payload 2800, xrcode 0, version 0, flags 0