Apex domains cannot have CNAME records.
Apple
Domain verification
apple-domain-verification=oelfw6QMuzZLdZmooWz7Lo8vePgvL-F1B9Lt4mX6VHI
Google
Domain verification
google-site-verification=LuTISvJdzeMkleKw9dDwm3N8n2Ux5v7l4DN2PxMk95I
Google
Domain verification
google-site-verification=tEwnjVavidEjvtaPh-ffpK9ACRSIIFiQMmhp_7hHDkY
Google
Domain verification
google-site-verification=TlzMFsqdiBKCXiQU0HYMUAYGn4Ni20EOtDyvtR1VSLM
Microsoft
Domain verification
MS=8DEABA132D683F17017FD89DC8EAB33FE07580B7
Proofpoint
Domain verification
ppe-2d7d49ef15ad8dd3344d7378a6b40e7e2b976ea7
F5cnZmr7YmmLLXDqCqxuo
Zone apex
Start of authority
Email
Serial
2024101742
Refresh
3h
Retry
1h
Expire
7d
Negative cache TTL
1h