Apex domains cannot have CNAME records.
1Password
Domain verification
1password-site-verification=JIRXIKYYX5GZRJXRG6VFHX6BJI
Apple
Domain verification
apple-domain-verification=KXnyEPjf5ysDNWV9
Facebook
Domain verification
facebook-domain-verification=cslh4hmgikfar6ofd642kte99mxr54
Google
Domain verification
google-site-verification=yi00DomaeNojdCrpXp9YfV9Bp8i3l4z20ttzsdujyZM
LinkedIn
Domain verification
linkedin-site-verification=c1eae641-f61a-4a13-844c-6068b9e709c2
Microsoft
Domain verification
MS=0A654D2A647B5BC0C2CCF186E708FF7617158FD2
Microsoft
Domain verification
MS=ms28285491
SwissSign
Domain verification
swisssign-check=Fd0iKT1QmUbIc9V9EqCLQOiHgnlRhBBv669B7EH8U8
OXw4ofHJKPMSKslilG4fxltBbCZli-EYYgIxMfmdisA
Zone apex
Start of authority
Email
Serial
2014071345
Refresh
4h
Retry
1h
Expire
7d
Negative cache TTL
3h