It is possible in
CCPv2 to add a DNS record that doesn't have TLD part and ends with a . (dot):
Record Type : A IPv4 Address : use any address (100.100.100.100) Host : testing. TTL : 3600
"Host" part ends with "." (dot) in the example above.
CCPv1 does not allow to add such records.
Software - related issue #POA-111873: "CCPv2: possible to add a DNS record with host part ending with dot".
Contact email@example.com or TAM to trace the status of the issue.