Apex domains cannot have CNAME records.
Atlassian
Domain verification
atlassian-domain-verification=bKnXN5vY1McYykte7fwp3io1R6lx5OsHof6bV3Lzm7TC/VkxDVRF8I/M0AurQZ32
Dynamics 365 marketing
Domain verification
d365mktkey=lD76J3cxw5TflULLy1amFobV2binMlcxvaABo3vTGsAx
Google
Domain verification
google-site-verification=14L1qmSifouVkhuHJ_bjLKfy8ySshqb5pHTkKOiSI6Q
HashiCorp Cloud Platform
Domain verification
hcp-domain-verification=b4c22318bae91dbb1c4bae8a0d35cdd0d6ef06cfa5c06f04e785382edee480a7
jamf-site-verification=gNOqdA_nWDsX9ddx_iLgLw
Microsoft
Domain verification
MS=ms89880222
Monday.com
Domain verification
monday-com-verification=poG8Q5IfQdhIv8ljq1wFSKDB1ztaR0qMKUfjW88TssQ
Paloalto networks
Domain verification
paloaltonetworks-site-verification=67602f2b29a264dade5e2e532051b879a304b3a518a87e3719f15ecb5d09978e
zoho-verification=zb46693992.zmverify.zoho.in
v=DKIM1; h=sha256; k=rsa; t=y;
p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu9NRQ+m2w+Ns9FJkzbWKkjB+i4tueV8iudpZ69xtcjs+r4WI2q85G4uGid1KSU7lLh7t7FG06WAmSGhlBXtUYgEcRzFmFSr17NeVg22S+jgXubVrpGLrYM438+w4oVAb7K6qhwZkqAJ1adf7x+5UBbzZzy4QUvRlaQBETz0eZFtBZj3xuajk0zcmi6LZ0n6yaGR0kQyF6wYV2/
3xxgytxaSoRkB6R0XprrbeIcAPwZr85K/LeYw/41pfgKZ2zCOmPSQD/G6GhNacFOcFgax9+j/x0wuSz5TvCkqCrngq6OEsIh9zW8VO3x//EhSRJ/6pwSn0CyedKT2TiAy7UdxqqQIDAQAB