Apex domains cannot have CNAME records.
Question and response
Question
dig lime-technologies.com. NS
Answer
lime-technologies.com. 2 NS ns-819.awsdns-38.net.
lime-technologies.com. 2 NS ns-355.awsdns-44.com.
lime-technologies.com. 2 NS ns-2000.awsdns-58.co.uk.
lime-technologies.com. 2 NS ns-1411.awsdns-48.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0