dns2.domain.by has no NS records.
NS records for this zone are defined at domain.by.
NS records for this zone are defined at domain.by.
Question and response
Question
dig dns2.domain.by. NS
Answer
The response has no answer records.
Authority
domain.by. 600 SOA dns1.domain.by. root.ok.by. 2026031205 21600 7200 1296000 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0