citycom-austria.com has no AAAA records.
Apex domains cannot have CNAME records.
Atlassian
Domain verification
atlassian-domain-verification=1s6vFyR6Z5eAJcE+zBOavXI49d69sdaScmKeiQf5tvzyYVyra5K3CJUjwCNYmXzh
Cisco CI
Domain verification
cisco-ci-domain-verification=4c1652a491a5c6772cb84f81ed2c6efc174a88ec804736680e8923a950182faa
Cisco CI
Domain verification
ciscocidomainverification=471fbb67d2e5447f7f77dbd002ed1e4887fb53538246a885cc719db1f3b34a37
Microsoft
Domain verification
MS=9B14A5C8A2077959ABC44F3B24A27E4B07E5ACE6
Microsoft
Domain verification
MS=ms91645073
SpyCloud
Domain verification
spycloud-domain-verification=127b2952-2c49-4d19-9205-0c2b27d06079
9547757208ef8bd5b7ff33c77b00a2f35bc9f31ae680d09f0d6117387e2c9e0a
bw=o2PI80CAW+4sDzota7lDFeYIQEuGsvMuYWJTfVcYxdCx
Zone apex
Start of authority
Email
Serial
2011082800
Refresh
3h
Retry
1h
Expire
14d
Negative cache TTL
1h