What an IBAN contains
An IBAN usually includes a country code, check digits, and a country-specific bank/account structure. The exact length and internal fields depend on the country.
What an IBAN check can do
A format/checksum tool can check visible structure and the MOD-97 checksum. Passing these checks does not prove the account exists or belongs to anyone.
Common mistakes
Do not treat an IBAN format result as payment approval, account verification, ownership confirmation, or compliance review.
FAQ
Does a valid checksum prove the account exists?
No. It only means the visible number passes public structure and checksum rules.
Should I verify before sending money?
Yes. Use your bank or payment provider for important transfers.