Apex domains cannot have CNAME records.
Facebook
Domain verification
facebook-domain-verification=f81av1kaihesdevniditidtneovt8b
Facebook
Domain verification
facebook-domain-verification=kt1yzmkzhingjmr1dglejj4d2n9kml
Google
Domain verification
google-site-verification=-EiAIgqAxabPEoLeEv-JNgdidYcfuB35SN8COZSeFhw
Google
Domain verification
google-site-verification=3GTyunKDHu1E5v33gwc3Q5HjQ43zFtBmley6WO0qQBc
Google
Domain verification
google-site-verification=brquqZl41AHYxjsxbll2UM999pzY1rYM8-aUyZFJhW4
Microsoft
Domain verification
MS=ms94742330
Trend Micro Email Security
Domain verification
tmes=08cf8b78990f74f41d707dcbfc3f4304
bradley.ns.cloudflare.com
Cloudflare
marlowe.ns.cloudflare.com
Cloudflare
Zone apex
Start of authority
Email
Serial
2397166954
Refresh
2h 46m 40s
Retry
40m
Expire
7d
Negative cache TTL
30m