subnet.0x2a.com.ua has no NS records.
NS records for this zone are defined at 0x2a.com.ua.
NS records for this zone are defined at 0x2a.com.ua.
Question and response
Question
dig subnet.0x2a.com.ua. NS
Answer
The response has no answer records.
Authority
0x2a.com.ua. 3600 SOA 0x2a.com.ua. support.0x2a.com.ua. 2014012111 10800 3600 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0