Apex domains cannot have CNAME records.
Question and response
Question
dig timemattersmobility.com. NS
Answer
timemattersmobility.com. 5 NS ns-1633.awsdns-12.co.uk.
timemattersmobility.com. 5 NS ns-329.awsdns-41.com.
timemattersmobility.com. 5 NS ns-950.awsdns-54.net.
timemattersmobility.com. 5 NS ns-1417.awsdns-49.org.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0