IBAN countries
| Country | Length | Example |
| Andorra | 24 | AD12 00012030200359100100 |
| Austria | 20 | AT611904300235473201 |
| Belgium | 16 | BE68539007547034 |
| Bosnia and Herzegovina | 20 | BA391290079401028494 |
| Bulgaria | 22 | BG80BNBG96611020345678 |
| Croatia | 21 | HR1210010051863000160 |
| Cyprus | 28 | CY17002001280000001200527600 |
| Czech Republic | 24 | CZ6508000000192000145399 |
| Denmark | 18 | DK5000400440116243 |
| Estonia | 20 | EE382200221020145685 |
| Finland | 18 | FI2112345600000785 |
| Faeroe Islands | 18 | FO1464600009692713 |
| France | 27 | FR1420041010050500013M02606 |
| Germany | 22 | DE89370400440532013000 |
| Gibraltar | 23 | GI75NWBK000000007099453 |
| Greece | 27 | GR1601101250000000012300695 |
| Greenland | 18 | GL8964710001000206 |
| Hungary | 28 | HU42117730161111101800000000 |
| Iceland | 26 | IS140159260076545510730339 |
| Ireland | 22 | IE29AIBK93115212345678 |
| Italy | 27 | IT60X0542811101000000123456 |
| Latvia | 21 | LV80BANK0000435195001 |
| Liechtenstein | 21 | LI21088100002324013AA |
| Lithuania | 20 | LT121000011101001000 |
| Luxembourg | 20 | LU280019400644750000 |
| Macedonia | 19 | MK07300000000042425 |
| Malta | 31 | MT84MALT011000012345MTCLAST001S |
| Monaco | 27 | MC5813488000010051108001292 |
| Netherlands | 18 | NL91ABNA0417164300 |
| Norway | 15 | NO9386011117947 |
| Poland | 28 | PL27114020040000300201355387 |
| Portugal | 25 | PT50000201231234567890154 |
| Romania | 24 | RO49AAAA1B31007593840000 |
| Serbia and Montenegro | 22 | CS73260005601001611379 |
| Slovak Republic | 24 | SK3112000000198742637541 |
| Slovenia | 19 | SI56191000000123438 |
| Spain | 24 | ES9121000418450200051332 |
| Sweden | 24 | SE3550000000054910000003 |
| Switzerland | 21 | CH9300762011623852957 |
| Turkey | 26 | TR330006100519786457841326 |
| United Kingdom | 22 | GB29NWBK60161331926819 |
| Country | Length | Example |
| Mauritius | 30 | MU17 BOMM 0101 1010 3030 0200 000M UR |
| Tunisia | 24 | TN5914207207100707129648 |