Apex domains cannot have CNAME records.
Apple
Domain verification
apple-domain-verification=pCM7sAMD_1H7OyJYjXhoh5_ZXdTOqNDlBaNuX71F0XE
Facebook
Domain verification
facebook-domain-verification=q0ofppbyuqyzwk1cgqhb1r9ianbg1n
Google
Domain verification
google-site-verification=SrJt3MzRhfgFHcahmo2AqeJiqlL71cCmL64preP0JLk
Microsoft
Domain verification
MS=ms87791692
MWhs7JVNkq/VWDb4X6FiWqMUBKkvFLWssXOc7ed1C9JROvCtaJRHz+Eb8dB1dqB+/bREiKUmdRWTXlD9f7QggA==
Zone apex
Start of authority
Email
Serial
2396776306
Refresh
2h 46m 40s
Retry
40m
Expire
7d
Negative cache TTL
30m