Apex domains cannot have CNAME records.
Atlassian
Domain verification
atlassian-domain-verification=i7CS7OkMXqaAnBCN/hmP2/r0zBnA6azVFtWAwlryUZeCb6HsQv0Vm0XaTgH/MmGB
Cisco CI
Domain verification
cisco-ci-domain-verification=3fda40fafe161e86fd3803198b7e20e0be0b9711a5f3a6e53d70c469a50a25ae
Cloudflare
Domain verification
cloudflare-verify.webhelp.com=265291561-769788451
DocuSign
Domain verification
docusign=2d8854a8-dc84-4a36-95f7-8de0d91d3a76
duo_sso_verification=6WiE8stFQofFpR0eYkqDQcY6YNoBacZLY5SJGW4WaUt7OJawtYBpCIfQL27IK4Kg
duo_sso_verification=KiauyczwY2MD6dbokLF8K2hoSPo3NbQi7UdRFGymaUoPO4JhY3b2RWnUigbYaN9Y
duo_sso_verification=qkHQp3jYYH2b0V4MofcmwKkHnUyZyiZXUTBGUk3YgtNNU9vWw3NmEoNZcUq3o7J3
Google Threat Intelligence
Domain verification
dtm-domain-verification=0r2lI4nH2j2EismZty1c_Ti78ZLCP2XCRW7exvY3TDI
Google
Domain verification
google-site-verification=Oek-5ToPZ8lwwQgOdp27vAz_ksSNyOq1YlkZZz9uVVk
Google
Domain verification
google-site-verification=rHZzJUw2IV9y1pngDRM8vMdLiCrjEjqeARAdK_LscQ8
Google
Domain verification
google-site-verification=YRZmMGTtawkVWfL7EEpOTjAoObM6vT2Op8m1mQlQbDk
Microsoft
Domain verification
MS=ms80551111
Pardot
Domain verification
pardot34922=fe6f57f017d7e9fba7f26f127556e340896fea880c3e2c3f58ed4d13c2323809
Pardot
Domain verification
pardot_34922_*=f025b56cd2e9f94814c5d8d1866dea3ac074be3364dc01d83537e219386b417e
Pexip
Domain verification
pexip-ms-tenant-domain-verification=7acda3e2-e34f-4804-8063-4fabe7eb19cd