Sudan IBAN validator
How the IBAN format works
- Format
- SD + 2 check digits + 2-digit bank code + 12-digit account number (18 chars)
- Example
- SD2129010501234001
Things to watch for
- 18 characters total, all numeric after the country code
- Checks structure and checksum only, not that the account exists
^SD[0-9]{16}$A Sudanese IBAN is 18 characters, entirely numeric: “SD”, two check digits, a 2-digit bank code, and a 12-digit account number. That 2-digit bank code is one of the shortest bank-identifier segments among any IBAN format on this site — most countries use 3 or 4 digits, or a 4-letter code, to identify a bank, but Sudan fits the same job into just two digits, leaving nearly all of the remaining length for the account number itself. At 18 characters total, a Sudanese IBAN ties Denmark, the Faroe Islands, and Greenland for one of the shortest formats in the whole registry, even though none of those countries share a banking system or region with Sudan. The Central Bank of Sudan oversees the domestic system this format describes.
How this validator works
This tool checks the “SD” prefix, confirms the bank code is exactly 2 digits, and confirms the account number is exactly 12 digits, then runs the mod-97 checksum (ISO 7064) a correctly generated Sudanese IBAN must satisfy — entirely in your browser, with nothing sent to a server.
What a pass doesn’t tell you
A pass confirms the 18 digits are correctly structured and internally consistent — not that the account is open or belongs to whoever you expect. This tool does no lookup against the Central Bank of Sudan or any commercial bank there. If a Sudanese IBAN fails, double-check where the 2-digit bank code ends and the 12-digit account number begins — with no letters to mark the boundary, it’s easy to miscount by a digit.
Scope: Sudanese IBAN structure and mod-97 checksum validation only — not payment processing or confirmation an account is active. Catch the typo here; confirm the account with the bank.
Content last reviewed 2026-07-23.
IBAN FAQ
What does a Sudanese IBAN look like?
18 characters, all numeric: 'SD', two check digits, a 2-digit bank code, and a 12-digit account number — for example SD2129010501234001.
Is Sudan's bank code unusually short?
Yes. At just 2 digits, it's one of the shortest bank-identifier segments of any IBAN format covered here — most countries use 3 or 4 characters to identify a bank.
Does a passing check confirm the Sudanese account is real?
No. It only confirms the 18 digits are correctly structured and pass the mod-97 checksum, entirely client-side, with no lookup against the Central Bank of Sudan or any commercial bank.