listserv.iit.cnr.it has no CNAME records.
Question and response
Question
dig listserv.iit.cnr.it. NS
Answer
The response has no answer records.
Authority
iit.cnr.it. 600 SOA ns1.iit.cnr.it. dnsmaster.iit.cnr.it. 2026022600 21600 1800 1209600 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0