rice.edu CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig rice.edu. NS

Answer

rice.edu. 5 NS ns1.rice.edu. rice.edu. 5 NS ns4.purdue.edu. rice.edu. 5 NS ns3.purdue.edu. rice.edu. 5 NS ns2.rice.edu.

Authority

The response has no authority records.

Additional

ns1.rice.edu. 5 A 128.42.209.32 ns2.rice.edu. 5 A 128.42.178.32 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0