hk.linkage.net CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig hk.linkage.net. NS

Answer

hk.linkage.net. 5 NS ns2.hk.net. hk.linkage.net. 5 NS ns1.hk.net.

Authority

The response has no authority records.

Additional

ns1.hk.net. 5 A 152.101.179.98 ns2.hk.net. 5 A 152.101.179.102 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0