IBAN formats allowing only numeric BBAN
The BBAN starts after country code and check digits, i.e. after position 4 of the electronic format.
Maps
Frequency
As of 2012-08-10.
Some countries have numeric-only BBAN formats. The one with the highest frequency is the 20n format, being used by five countries.
Twelve countries use only full groups of four:
- 12 BE
- 16 BS, AT, EE, LT
- 20 CZ, SK, ES, SE, TN
- 24 HU, PL
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 |
Hexdecimal representation
Numeric BBAN of up to 19 digits can be converted to 16 digit BBAN in hex.
- 9999 9999 9999 9999 9999 (20n, 99999999999999999999) is 56BC 75E2 D630 FFFF F (17h, 56BC75E2D630FFFFF)
- FFFF FFFF FFFF FFFF (16h, FFFFFFFFFFFFFFFF) is 1844 6744 0737 0955 1615 (20n, 18446744073709551615)
Numeric BBAN of up to 24 digits can be converted to 20 digit BBAN in hex.
- FFFF FFFF FFFF FFFF FFFF (20h, FFFFFFFFFFFFFFFFFFFF) is 1208 9258 1961 4629 1747 0617 5 (25n, 1208925819614629174706175)