ns3.data.lt has no CNAME records.
Question and response
Question
dig ns3.data.lt. NS
Answer
The response has no answer records.
Authority
data.lt. 382 SOA ns1.data.lt. hostmaster.hostex.lt. 2026021801 28800 1800 1209600 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0