comm.assistant.ua has no NS records.
NS records for this zone are defined at assistant.ua.
NS records for this zone are defined at assistant.ua.
Question and response
Question
dig comm.assistant.ua. NS
Answer
The response has no answer records.
Authority
assistant.ua. 1800 SOA nsa4.srv53.net. support.dnshosting.org. 1764677036 1800 600 2419200 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0