Apex domains cannot have CNAME records.
Question and response
Question
dig palmone.net. NS
Answer
palmone.net. 4 NS ns-1252.awsdns-28.org.
palmone.net. 4 NS ns-1893.awsdns-44.co.uk.
palmone.net. 4 NS ns-263.awsdns-32.com.
palmone.net. 4 NS ns-755.awsdns-30.net.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0