Dominican Republic IBAN validator
How the IBAN format works
- Format
- DO + 2 check digits + 4-char bank code + 20-digit account number (28 chars)
- Example
- DO28BAGR00000001212453611324
Things to watch for
- 28 characters total
- Checks structure and checksum only, not that the account exists
^DO[0-9]{2}[0-9A-Z]{4}[0-9]{20}$A Dominican Republic IBAN is 28 characters: “DO”, two check digits, a 4-character alphanumeric bank code, and a 20-digit account number. The bank code stands out among this batch of countries because it can hold letters as well as digits, carrying over Dominican banks’ existing letter-based identifiers into the IBAN era — in the example DO28BAGR00000001212453611324, “BAGR” is that bank code, immediately followed by the 20-digit account number. Getting the boundary between the two blocks right matters more here than in an all-numeric format, since a misplaced letter can land in either segment.
How this validator works
This tool checks for the “DO” prefix, confirms the bank-code block is exactly 4 alphanumeric characters, confirms the account block is 20 digits, and then runs the mod-97 (ISO 7064) checksum a correctly generated Dominican Republic IBAN must satisfy — entirely in your browser, with nothing sent to a server and no signup involved.
What a pass doesn’t tell you
A pass confirms the 28 characters are well-formed and pass the checksum, not that the account is open, active, or belongs to the person or business you’re paying. This validator never contacts Banco Central de la República Dominicana or any commercial bank — there’s no name-matching or existence lookup involved. If a Dominican Republic IBAN fails, check first whether a letter from the bank code was accidentally counted as part of the 20-digit account block, or the reverse.
Scope: structure and mod-97 checksum validation for Dominican Republic IBANs only — not payment processing, bank verification, or proof an account is active. Use it to catch a typo before a transfer fails.
Content last reviewed 2026-07-09.
IBAN FAQ
What does a Dominican Republic IBAN look like?
28 characters: 'DO', two check digits, a 4-character alphanumeric bank code, and a 20-digit account number — for example DO28BAGR00000001212453611324. The bank code can include letters, which sets it apart from several neighboring Caribbean and Central American formats that stay fully numeric.
Why does the Dominican Republic use a lettered bank code while Costa Rica and Brazil's neighbors don't?
Each country's central bank designed its own domestic numbering scheme before adopting IBAN, and the Dominican Republic's scheme carried existing letter-based bank identifiers into the IBAN format — similar in spirit to how UK or Gibraltar bank codes use letters, just applied to a Caribbean banking system.
Does a pass confirm the Dominican account is genuine?
No — this tool only confirms the 28 characters are correctly structured and pass the mod-97 checksum. It performs no lookup against Banco Central de la República Dominicana or any commercial bank, so it can't confirm the account is open or active.