Description
Split an IBAN-shaped token into country letters, check digits, and BBAN without country or checksum validation.
Identifier validation can involve several distinct questions: whether text has the expected shape, whether a checksum is consistent, and whether an authority actually assigned the identifier. Formatting and field extraction address narrower questions. Each result must be read according to the particular property the tool checks.
Split an IBAN-shaped token into country letters, check digits, and BBAN without country or checksum validation.
When to use this tool
Use Iban Country Check Digit Field Split when you need the particular shape, formatting, field, or checksum property as one explicit stage in an identifier workflow.
How to use the tool and how it works
- Enter iban. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read country, checkDigits, bban. Use the output convention below.
Require two uppercase country letters, two check digits, and one through 30 uppercase alphanumeric BBAN characters. Return country, checkDigits, and bban as literal substrings.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| iban | Iban | Required. Text; maximum UTF-16 length 8192. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| country | Country | Required. Text; maximum UTF-16 length 8192. |
| checkDigits | Check Digits | Required. Text; maximum UTF-16 length 8192. |
| bban | Bban | Required. Text; maximum UTF-16 length 8192. |
{
"input": {
"iban": "GB82WEST12345698765432"
},
"output": {
"country": "GB",
"checkDigits": "82",
"bban": "WEST12345698765432"
}
}Limitations and assumptions
- This broad lexical split does not consult country-specific IBAN lengths, calculate mod 97, verify an account, or establish routing or payment validity.
- The field tables state structural bounds; the mechanics also specify cross-field constraints. Malformed inputs and unsupported domains cause errors. A successful false flag, empty branch value, or zero placeholder has the meaning stated above and is distinct from an input error.
Alternative or Complementary methods
Use a complete format and checksum validator when required, then consult the issuing registry or verification process for assignment and identity. Preserve meaningful leading zeros as text.
References
Similar or alternative tools
- CAS Check Digit Remainder Term
Calculate a CAS-style body digit weighted sum and its modulo-10 remainder.
- Validation: Cas Three Part Digit Shape
Check only the three-part CAS Registry Number digit/hyphen shape, explicitly not its check digit or substance registry.