2760.static.cpe.hcn.gr has no CNAME records.
Question and response
Question
dig 2760.static.cpe.hcn.gr. NS
Answer
The response has no answer records.
Authority
cpe.hcn.gr. 201 SOA dns-01.hcn.gr. office.hcn.gr. 2018476941 14400 3600 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0