IBAN formats allowing only numeric BBAN
https://commons.wikimedia.org/wiki/File:IBAN_format_by_country_-_higlight_numeric.svg
Numeric BBAN
As of 2012-08-10.
The BBAN starts after country code and check digits, i.e. after position 4 of the electronic format.
Some countries have numeric-only BBAN formats. The one with the highest frequency is the 20n format, being used by five countries.
Countries using formats that are only numeric after the country code and the check characters are:
| BBAN length | ISO 3166-1 alpha-2 codes for countries | Quantity of countries using that format | Length is a multiple of 4 |
|---|---|---|---|
| 11 | NO | 1 | no |
| 12 | BE | 1 | yes |
| 14 | FO, GL, FI (including AX), DK | 4 | no |
| 15 | SI | 1 | no |
| 16 | BS, AT, EE, LT | 4 | yes |
| 17 | HR, CR | 2 | no |
| 18 | DE, ME, RS | 3 | no |
| 19 | AE, IL | 2 | no |
| 20 | CZ, SK, ES, SE, TN | 5 | yes |
| 21 | PT | 1 | no |
| 22 | IS | 1 | no |
| 23 | MR | 1 | no |
| 24 | HU, PL | 2 | yes |
| 11-24 | 28 | 12 |
Alphanumeric BBAN
- AL:8!n16!c
- AD:4!n4!n12!c
- AZ:4!a20!c
...