Enable IBAN search and provide the following information:
Rule based validity (correct length/bank code/checksum)
Provide bank information for provided IBAN
Provide weblink where IBAN was published
Many thanks for this request!
For rule based validity checks please check out our existing: Bank Data Quality Checks
I would also highlight this idea as checking the IBAN in the Bank Trust Score Check Result should also provide this information. There should be at least the information if the entered IBAN /bank information is at least a valid one (with the information listed above) and not just give the result "Not shared by community".