postapa.telecomitalia.it CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig postapa.telecomitalia.it. NS

Answer

postapa.telecomitalia.it. 5 NS dnsts.interbusiness.it. postapa.telecomitalia.it. 5 NS ns.telecomitalia.it.

Authority

The response has no authority records.

Additional

ns.telecomitalia.it. 5 A 156.54.249.250 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0