Comoros IBAN validator
How the IBAN format works
- Format
- KM + 2 check digits + 25 digits (27 chars) — used in practice, not in the official SWIFT IBAN registry
- Example
- KM8900000000000000000100009
Things to watch for
- Comoros is not in the official SWIFT IBAN registry — this 27-character format is used in practice by Comorian banks, not formally standardized by SWIFT/ECBS
- Unlike its Indian Ocean neighbors Mauritius and Seychelles, both official SWIFT IBAN registry members, Comoros' IBAN-style format has no formal SWIFT/ECBS backing
- Checks format and checksum only — does not confirm the account exists or is held at a real Comorian bank
^KM[0-9]{25}$A Comorian IBAN-style account number is 27 characters: “KM”, two check digits, then 25 digits with no letters anywhere — for example KM8900000000000000000100009. Comoros, a small island nation in the Indian Ocean off East Africa, is not in the official SWIFT/ECBS IBAN registry — a notable contrast with two of its regional neighbors, Mauritius and Seychelles, which are both registered members with formally standardized IBAN specifications.
Comoros also uses its own currency, the Comorian franc (KMF), pegged separately from the CFA franc used across West and Central Africa — so unlike Cameroon or Senegal, it doesn’t share a central bank or currency union with any other country on this list.
How this validator works
This tool checks the “KM” prefix, confirms exactly 25 digits follow the two check digits, and runs the mod-97 checksum (ISO 7064) a correctly formed Comorian 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 27 characters are internally consistent — not that the account is open or that Comoros has formal SWIFT IBAN registration. This tool performs no lookup against BCC or any Comorian 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 Comoros an official IBAN registry country?
No. Comoros is not in the official SWIFT/ECBS IBAN registry — unlike its Indian Ocean neighbors Mauritius and Seychelles, both of which are registered members. Comorian banks use a 27-character IBAN-shaped account number satisfying the mod-97 checksum without formal SWIFT backing.
What does a Comorian IBAN-style number look like?
27 characters: 'KM', two check digits, then 25 digits with no letters — for example KM8900000000000000000100009.
Does this tool confirm the account is active at a Comorian bank?
No. It checks structure and the mod-97 checksum only, entirely client-side. Confirming an account requires the account-holder's bank or Banque Centrale des Comores (BCC).