dr11.rdsnet.ro has no CNAME records.
Question and response
Question
dig dr11.rdsnet.ro. NS
Answer
The response has no answer records.
Authority
rdsnet.ro. 3230 SOA ns1.rdsnet.ro. dns-adm.rdsnet.ro. 2026030501 1200 180 3600000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0