blackboard.com has no AAAA records.
Apex domains cannot have CNAME records.
Atlassian
Domain verification
atlassian-domain-verification=sL0SeJrvzBUml3o/s27o80sReunbCTKElGcidHph2tiTaZ0nMg7YECa/wuQooaq/
Cloudflare
Internal use
ca3-48cd68e33ded47618c454c158fa7dcaf
Google
Domain verification
google-site-verification=fTocuU2OdTBoe0z0NgNx_LFAThArXIONtFHyO--shKk
Google
Domain verification
google-site-verification=h4SDO4a-PJNaavz2JFzCHiOqtvcVJG-r2SSOSwVnZcw
Mixpanel
Domain verification
mixpanel-domain-verify=92235a82-8728-4950-9851-57c4eecd4342
docu-45723426-bedd-41e0-a6f0-664931fc3806
pfXrSz+R3xXW/7frt70I2B9I5Ji3XNr+ndfiptWw0SwRIwJT1lzgMyka1en34swjl1jIwlBlvCnBBnb4zI+5bA==
rightscale-4938059c848a09deb829
ns-1321.awsdns-37.org
Amazon Web Services
Route 53
ns-1824.awsdns-36.co.uk
Amazon Web Services
Route 53
ns-337.awsdns-42.com
Amazon Web Services
Route 53
ns-719.awsdns-25.net
Amazon Web Services
Route 53
Zone apex
Start of authority
Email
Serial
1
Refresh
2h
Retry
15m
Expire
14d
Negative cache TTL
1d