spk.cz CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig spk.cz. NS

Answer

spk.cz. 5 NS ns4.selectsystem.cz. spk.cz. 5 NS ns5.selectsystem.cz.

Authority

The response has no authority records.

Additional

ns4.selectsystem.cz. 5 A 188.116.64.9 ns5.selectsystem.cz. 5 A 188.116.65.9 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0