marcom.com has no AAAA records.
Apex domains cannot have CNAME records.
Atlassian
Domain verification
atlassian-domain-verification=yxDBxD1if0Vf0siu7DwAq4aY9R9Gk84fAwsFdRCMskZYghby45OlySCpFH7WO7qm
Google
Domain verification
google-site-verification=OQR_1jA3RYflKk7ZCaxsth3lVHZYKFTMGJ6tUeu3GD4
HubSpot
Single sign-on
hubspot-developer-verification=ODE2OWI0OWUtNWEwYi00ZmNmLThjNjctOTdmNTlmYWJhMWZl
HubSpot
Single sign-on
hubspot-developer-verification=Yjg3MGJhNDQtNjQ5OC00OTZjLTlmOTUtNGI0NjcwMmMyNmFl
Microsoft
Domain verification
MS=ms26322840
NUXDQJxNNPjROIkm67QpsNxAInjb4vkfK5eRg5hwf5n4gRm2iNcpzb6qAuMyajNQ1Et0Or/bYTGOQXUHrn0A6w==
Qbhda3rZhHOss+swlFZk7Qsod/sLMELAcLznhAD/GXyFqrE6ulW6sHXbL/2A2ARTzk1djeZ3tVMuUkwxv1ITng==
ns1-05.azure-dns.com
Microsoft Azure
ns2-05.azure-dns.net
Microsoft Azure
ns3-05.azure-dns.org
Microsoft Azure
ns4-05.azure-dns.info
Microsoft Azure
Zone apex
Start of authority
Email
Serial
1
Refresh
1h
Retry
5m
Expire
28d
Negative cache TTL
5m