suddenlink.net CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig suddenlink.net. NS

Answer

suddenlink.net. 5 NS authns1.alticeusa.com. suddenlink.net. 5 NS authns1.alticeusa.net.

Authority

The response has no authority records.

Additional

authns1.alticeusa.com. 5 A 167.206.13.20 authns1.alticeusa.net. 5 A 167.206.12.12 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0