comcast.com has no AAAA records.
Apex domains cannot have CNAME records.
1Password
Domain verification
1password-site-verification=3BCX5ACVKBD73ADOMJ5XWM7JJ4
Adobe identity provider
Domain verification
adobe-idp-site-verification=8c9c59d410322404f7d75a0b3c770ce7b87cf141707b58224143253e1149f489
Airtable
Domain verification
airtable-verification=31e52307c66bf62d16697b7f0439d35e
Airtable
Domain verification
airtable-verification=644c0c83b6807a2a10c20d4cf57505d7
Airtable
Domain verification
airtable-verification=709aa8e31ed274aa8abc0f3a9286141f
Airtable
Domain verification
airtable-verification=d9386eea22fce5ee0d01209512aa7706
Amazon SES
Domain verification
amazonses:RYuDm+T3xJC87y0v4Cj4JlDm9d5enVzIZcr/arCF7J0=
Apple
Domain verification
apple-domain-verification=VNdTgwsxrDHE4eJM
Apple
Domain verification
apple-domain-verification=XRKeuEf5cWtc2oDC
Atlassian
Domain verification
atlassian-domain-verification=C34TI2IiJOrziv9uyV2Yva6ZoRRCSZPjqc15wZASQfypHgNMl6esmkpDsYYXhjk7
Atlassian
Domain verification
atlassian-domain-verification=J+tB36tc4CyLsnqZ/MTW5tI3SZ+IOFAGTWEgMbo+FLRl+gvI4cSIQmMmTYOPEbTz
Atlassian
Domain verification
atlassian-domain-verification=n+yfnu4Su0J6uQkiatjL+lTNjzOZrPUGOpVn+HiHPwwDgMivjJD5Pwg7yzepfmIC
Atlassian
Domain verification
atlassian-domain-verification=xhDGO0SgEPXcuSpqqvu7kAzZyKrM2pat53VPEt5XvKGHvOq4ErhUFRioLG98Ndh3
Autodesk
Domain verification
autodesk-domain-verification=9qi_qkHrCGa8onVbz33s
BrowserStack
Domain verification
browserstack-domain-verification=e23475d1-ef64-4cf7-bf92-7620239fe86a
Docker
Domain verification
docker-verification=f79a60d9-69ec-4c26-8d54-0165c0943613
DocuSign
Domain verification
docusign=0ead29a6-1c9c-4b0c-865a-85a5a127e776
DocuSign
Domain verification
docusign=8fb076b3-05e6-41c4-a6ee-6f6227be4b11
Facebook
Domain verification
facebook-domain-verification=f1zw72g52fjiesmld6xtuj467pl7f5
Google
Domain verification
google-site-verification=XdqEZdbhoNgKou31_aOrVN98TKJqxC0Ve3hNPBmSM7M
Intersight
Domain verification
intersight=3c7c5c60389a6b81830ef696f8761bc121ecf3f10d7cf8eef08f66af90451a8f
MongoDB
Domain verification
mongodb-site-verification=ucqyDX29txaTTi3K4euWVtieT0zCXRrg
OpenAI
Domain verification
openai-domain-verification=dv-z3jR2RoYFRLipmXTqN9mx5hU
Paloalto networks
Domain verification
paloaltonetworks-site-verification=b51e185f274a13eccff6f0e001549d4a2f08fc11c599ffde8f295cc7cf4c3138
Paloalto networks
Domain verification
paloaltonetworks-site-verification=b6c919476067691db128e9375b002b801db8ab2a1de767bc27acb829530c59bd
Smartsheet
Domain verification
smartsheet-site-validation=x1Hv84--jB9jvo7M0QQviDXPy_81zS_t
TeamViewer
Domain verification
teamviewer-sso-verification=4a24e296450940f48ac4faba9a172fc0
al0yn+08kj3q/n1E+s02ttnE5Fd9gIjwjjbn4mCggizGLJepyQ7cMxRTgw4RxYVoZ965qJIHfnH0966SxaicMw==
aws-domain-verification=c326827a-0d9a-4061-a35d-1ea2a8afc6f5
eYZbzQ91r/pvvnV/FdrbHyREx7EaAwWLeNYk/EMQrJiGpNCsX4tJcWlHJDFzifTDbfnlhI6koqrm0dYgkIfncg==
Zone apex
Start of authority
Email
Serial
2009104323
Refresh
2h
Retry
1h
Expire
14d
Negative cache TTL
15m