test.snbox.ru has no NS records.
NS records for this zone are defined at snbox.ru.
NS records for this zone are defined at snbox.ru.
Question and response
Question
dig test.snbox.ru. NS
Answer
The response has no answer records.
Authority
snbox.ru. 1800 SOA arch.ns.cloudflare.com. dns.cloudflare.com. 2394741794 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0