mail.ptl.ru CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig mail.ptl.ru. NS

Answer

mail.ptl.ru. 5 NS ns.quantum.ru. mail.ptl.ru. 5 NS ns1.quantum.ru.

Authority

The response has no authority records.

Additional

ns.quantum.RU. 5 A 213.170.64.33 ns1.quantum.RU. 5 A 213.170.65.33 . 0 OPT ; payload 1232, xrcode 0, version 0, flags 0