gslb.serverdata.net CNAME records

CNAME Canonical name
Apex domains cannot have CNAME records.

Question and response

Question

dig gslb.serverdata.net. NS

Answer

gslb.serverdata.net. 1 NS gtm-va1.serverdata.net. gslb.serverdata.net. 1 NS gtm-co2.serverdata.net. gslb.serverdata.net. 1 NS gtm-vx1.serverdata.net.

Authority

The response has no authority records.

Additional

. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0