relay3.telnetwork.it has no CNAME records.
Question and response
Question
dig relay3.telnetwork.it. NS
Answer
The response has no answer records.
Authority
telnetwork.it. 387 SOA ns0.telnetwork.it. nsoggia.telnetwork.it. 2025042900 43200 2160 86400 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0