dc20.etius.jp CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig dc20.etius.jp. NS

Answer

dc20.etius.jp. 5 NS ns3.sphere.ad.jp. dc20.etius.jp. 5 NS ns4.sphere.ad.jp.

Authority

The response has no authority records.

Additional

ns3.sphere.ad.jp. 2 A 202.239.113.22 ns4.sphere.ad.jp. 2 A 202.239.113.30 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0