Apex domains cannot have CNAME records.
Facebook
Domain verification
facebook-domain-verification=h6ulkdsze2qhdtbdnivt3lilquemgc
Google
Domain verification
google-site-verification=9aqt6mNhLx_inDlQjEfPiqq_TYfy72IFpoUh5_gijEg
Google
Domain verification
google-site-verification=iJN6qYrMLZmqRE70EPwnmUtT7qW3Rs-X3_wgil1YQjw
Google
Domain verification
google-site-verification=ntjPAtTot4dDzv9Z7WpQYYSlgVajPuBZx0FoZyRE8q8
Google
Domain verification
google-site-verification=u1wJrtoeh7Cm1rWUcfA5shOYAXklaqy_IAsIMa8L-qU
Google
Domain verification
google-site-verification=V6qxrpALPrk4N8F9wqgUVMwFdKi4sSUY5dLaICCx5rU
Google
Domain verification
google-site-verification=VUSidRle8tqArZaEIF_9-uxlBmOku8re9NfdLDyfFE0
Google
Domain verification
google-site-verification=WiCZ6HhPFmPMk5PTkdpSnevgiRttL2tQ-7QA_Z81JRk
Google
Domain verification
google-site-verification=zqthuNzyDukN37Znr1L5xdDKHo7KZUL2LTyOqzU7cFo
Zoom
Domain verification
zoom-domain-verification=ZOOM_verify_c71c4db9abfb4773aaed4c681c8c7b42
office.com has no MX records.
ns1-05.azure-dns.com
Microsoft Azure
ns2-05.azure-dns.net
Microsoft Azure
ns3-05.azure-dns.org
Microsoft Azure
ns4-05.azure-dns.info
Microsoft Azure
Zone apex
Start of authority
Email
Serial
2017971531
Refresh
5m
Retry
2m
Expire
28d
Negative cache TTL
1m