Apex domains cannot have CNAME records.
Adobe identity provider
Domain verification
adobe-idp-site-verification=663c8e06-5670-49dc-b7f0-38808725ce6b
Apple
Domain verification
apple-domain-verification=43NZG7dHLygYQrVJ
Atlassian
Domain verification
atlassian-domain-verification=Umrhy5TM1LMX2es2tgdaSx6sK3oMq1VAmlVi0o49u4UkDKiKsTAUSVinTMKxButk
DocuSign
Domain verification
docusign=1178dcfc-56ed-4b5b-9fa6-054682ea5a07
duo_sso_verification=a9ltMWa7gQvXoQtYBf4e9lLvlvA25CG7pvXHnIVeBQ23bxKJgsl70BXzXEz80Zxg
GlobalSign
Domain verification
_globalsign-domain-verification=gTOn7nUPxoxVvuLaY4w25qXYdP2acXc5PCO3T60sA7
Google
Domain verification
google-site-verification=0ooq0ToV1g39VcKp3HUTP6eqJHg9cUrXrHyRVZ_Bpe0
Google
Domain verification
google-site-verification=CB7q5uX6omaomW1p7h7pNjuR0n9t19DnzDD3omlm-Yk
Google
Domain verification
google-site-verification=CltTFdqS-9Br8W_TKZ7uFCkuejpaIJ1iVPozz9GjJLI
Google
Domain verification
google-site-verification=HaDjmnjlQ8jsWwpi3Y82rq3_lpldgztboFeqqyJsSnQ
Google
Domain verification
google-site-verification=Lf-CNn6FXbtYpq9l9g-0Yg-MABx9i4sNLw3jBGPFFoU
Microsoft
Domain verification
MS=ms88683014
Twilio
Domain verification
twilio-domain-verification=233ead60dfdc6c1d8cf1a544e49915a3
uber-domain-verification=066a61a5-813a-4401-ab39-81d5e59fc609