Apex domains cannot have CNAME records.
Question and response
Question
dig teledigital.com. NS
Answer
teledigital.com. 5 NS amalia.ns.cloudflare.com.
teledigital.com. 5 NS dakota.ns.cloudflare.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0