Apex domains cannot have CNAME records.
Adobe identity provider
Domain verification
adobe-idp-site-verification=433cdb79da22d958ed93f9cff11b5eeb637b78254e376e8a4c2e53b1f78f952c
Adobe Sign
Domain verification
adobe-sign-verification=6ab640d036282542165a7b71b870628
Apple
Domain verification
apple-domain-verification=ynfOI0LBhiDkUkz0
Atlassian
Domain verification
atlassian-domain-verification=B9cb38vQ0e4rN5v0/k2Q1/I4Wf48LlXj5QSIkboheSGYbGS+KcokpAfG1n3Ez7Vl
Atlassian
Domain verification
atlassian-domain-verification=F6OBkgGxZofmw0qMxtQjV7RhIfcbOt3ldwp6I4RTYRPqcPQGtiflmCpoFvUrELh2
Cisco CI
Domain verification
ciscocidomainverification=1b40d6ea93827771ccd6884270921863507f03068795e8ffb675ca727d777843
Cisco CI
Domain verification
ciscocidomainverification=491264f86a435b40ecf5b45fe696520f1fea0d74e6d802c6bfa8f88dd1c42876
Facebook
Domain verification
facebook-domain-verification=oz54xjolrdi9w3io124i8sgxvr5qa3
Google
Domain verification
google-site-verification=8kk_hc4rNlCcgObCpJ4Tq_zMBFdcqhHcqm-MshnTrF8
Google
Domain verification
google-site-verification=eKuWhd04Pr_SAwILUDL0ef8SRlCXE9JPI27hW2m6AcQ
Google
Domain verification
google-site-verification=eUM7qVFcN09vmV8uDgpUgqTODo622w1fBSjXjEp_tk4
Google
Domain verification
google-site-verification=pkDDhldI-SOaYp-udnFsIEtZuYWSnoRBSYpT_h_AKTA
Google
Domain verification
google-site-verification=qH2dld9b3rGjMGkhfFqe25p23wXfrZBDPh1ej8i1ZBM
ibmid=17c9cbbe-1b1d-470e-a46c-0bf565d84599
Microsoft
Domain verification
MS=ms15583092
miro-verification=1a7b8a6cc4dfc40c718fa9a98e29fb06d4f8a63a