mx.facct.dev has no NS records.
NS records for this zone are defined at facct.dev.
NS records for this zone are defined at facct.dev.
Question and response
Question
dig mx.facct.dev. NS
Answer
The response has no answer records.
Authority
facct.dev. 60 SOA a.ns.selectel.ru. support.selectel.ru. 2026022001 10800 3600 604800 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0