Cape Verde IBAN validator
How the IBAN format works
- Format
- CV + 2 check digits + 23 digits (25 chars) — used in practice, not in the official SWIFT IBAN registry
- Example
- CV48000000000000000100005
Things to watch for
- Cape Verde is not in the official SWIFT IBAN registry — this 25-character format is used in practice by Cape Verdean banks, not formally standardized by SWIFT/ECBS
- The mod-97 checksum is mathematically valid for a 25-character Cape Verdean IBAN, but the length itself isn't SWIFT-standardized
- Checks format and checksum only — does not confirm the account exists or is held at a real Cape Verdean bank
^CV[0-9]{23}$A Cape Verdean IBAN-style account number is 25 characters: “CV”, two check digits, then 23 digits with no letters anywhere — for example CV48000000000000000100005. An archipelago nation off West Africa’s coast, Cape Verde is not part of the official SWIFT/ECBS IBAN registry, but its banking sector adopted a purely numeric, IBAN-shaped account format anyway, one that satisfies the same mod-97 checksum every genuine IBAN relies on.
Cape Verde shares that Portuguese-speaking, non-registry status with Guinea-Bissau — its nearest linguistic peer on the mainland — as well as Angola and Mozambique further south, none of which have gone through SWIFT’s formal IBAN cataloguing.
How this validator works
This tool checks the “CV” prefix, confirms exactly 23 digits follow the two check digits, and runs the mod-97 checksum (ISO 7064) a correctly formed Cape Verdean account number satisfies. Everything happens in your browser, with nothing sent to a server.
What a pass doesn’t tell you
A pass confirms the 25 characters are internally consistent — not that the account is open or that Cape Verde has formal SWIFT IBAN registration. This tool does no lookup against BCV or any Cape Verdean bank.
Scope: format and mod-97 checksum validation only, for a format used in practice but not SWIFT-registered — not payment processing or account confirmation.
Content last reviewed 2026-08-10.
IBAN FAQ
Is Cape Verde in the official IBAN registry?
No. Cape Verde is not catalogued in the official SWIFT/ECBS IBAN registry. Its banks use a 25-character IBAN-shaped account number that satisfies the mod-97 checksum, but the format was never formally standardized by SWIFT.
What does a Cape Verdean IBAN-style number look like?
25 characters: 'CV', two check digits, then 23 digits with no letters — for example CV48000000000000000100005.
Does this tool confirm the account is active at a Cape Verdean bank?
No. It checks structure and the mod-97 checksum only, entirely client-side. Confirming an account requires the account-holder's bank or Banco de Cabo Verde (BCV), which this tool doesn't contact.