Mongolia IBAN validator
How the IBAN format works
- Format
- MN + 2 check digits + 4-digit bank code + 12-digit account number (20 chars)
- Example
- MN580050099123456789
Things to watch for
- 20 characters total, all numeric after the country code
- Checks structure and checksum only, not that the account exists
^MN[0-9]{2}[0-9]{4}[0-9]{12}$A Mongolian IBAN is 20 characters total: “MN”, two check digits, a 4-digit bank code, and a 12-digit account number — for example MN580050099123456789. Everything after the two-letter country code is plain digits, with no letters anywhere in the bank-code or account blocks. That’s a real point of difference from some other IBANs of the same length: Kazakhstan’s 20-character format, for instance, commonly carries a 3-letter currency marker like KZT embedded inside its account block, while Mongolia’s stays fully numeric throughout. Anyone sending money to a Mongolian bank account, whether from within the country or from abroad, needs the 4-digit bank code and the full 12-digit account number entered without a digit out of place.
How this validator works
This tool checks the “MN” prefix, confirms the bank-code block is exactly 4 digits and the account block is exactly 12 digits, then runs the mod-97 checksum (ISO 7064) used to generate valid Mongolian IBANs — entirely in your browser, with nothing sent to a server.
What a pass doesn’t tell you
A pass confirms the 20 characters are correctly formed and internally consistent — not that the account is real, open, or belongs to the person you expect. This tool performs no lookup against the Bank of Mongolia or any commercial bank.
Scope: Mongolian IBAN structure and mod-97 checksum validation only — not payment processing or confirmation an account is active. Use this to catch a typo before a transfer fails; your bank confirms the account itself.
Content last reviewed 2026-08-09.
IBAN FAQ
How long is a Mongolian IBAN?
20 characters — one of the shortest formats in this set, tied with a handful of others: 'MN', two check digits, a 4-digit bank code, and a 12-digit account number, for example MN580050099123456789.
Does a Mongolian IBAN contain any letters after the country code?
No. Both the bank-code and account blocks are strictly numeric — a contrast with some similarly short IBANs, like Kazakhstan's, which commonly embed a 3-letter currency code inside the account block itself.
Does this tool confirm the account is active at a Mongolian bank?
No. It checks structure and the mod-97 checksum only, entirely client-side. Confirming an account is open or active requires the account-holder's bank or the Bank of Mongolia.