aarp.org CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig aarp.org. NS

Answer

aarp.org. 5 NS pdns83.ultradns.org. aarp.org. 5 NS pdns83.ultradns.com. aarp.org. 5 NS pdns83.ultradns.biz. aarp.org. 5 NS pdns83.ultradns.net.

Authority

The response has no authority records.

Additional

. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0