1. Normalize the input
Spaces are removed and the representation is normalized.
🇨🇬 IBAN COUNTRY PROFILE · Republic of the Congo
Check an IBAN from Republic of the Congo and understand its structure
An IBAN for Republic of the Congo always contains 27 characters. After CG and two IBAN check digits, the national BBAN contains 5-character bank identifier, 5-character branch identifier, 11-character account part and 2-character national check digit. No additional bank directory lookup is active for Republic of the Congo; validation covers the structure and international check digits.
27 charactersFixed total length
23 charactersNational BBAN
CGISO country code
Structure of an IBAN from Republic of the Congo
The reference example CG39 3001 3020 0037 1072 1836 132 shows the country-specific components. It is provided for explanation only and is not a request to make a payment.
CG 39 30013 02000 37107218361 32
CGCountry code
39IBAN check digits
30013Bank identifier
02000Branch identifier
37107218361Account part
32National check digit
| Position | Length | Component | Format |
|---|---|---|---|
| 1–2 | 2 | Country code | Letters: CG |
| 3–4 | 2 | IBAN check digits | Digits |
| 5–9 | 5 | Bank identifier | Digits |
| 10–14 | 5 | Branch identifier | Digits |
| 15–25 | 11 | Account part | Digits |
| 26–27 | 2 | National check digit | Digits |
Validate an IBAN for Congo
This validator accepts only IBANs from the selected country.
What IBAN-Test validates for Republic of the Congo
Validation covers normalization, country assignment, the fixed 27-character length, the country-specific segment structure and MOD-97. Account ownership and real-time account existence are not checked.
2. Country and structure
CG, the length and the segment sequence are checked.
3. MOD-97
The international checksum catches many typing errors.
4. Available depth
The check remains limited to format, structure and MOD-97.
| Validation step | Available | Details |
|---|---|---|
| Country, length and structure | Yes | CG, 27 characters; 5-character bank identifier, 5-character branch identifier, 11-character account part and 2-character national check digit. |
| MOD-97 checksum | Yes | Mathematical IBAN validation. |
| Known bank identifier | No | No bank directory lookup is active. |
| National account check | No | No additional national account check method. |
| Bank details and BIC | No | No additional bank master data. |
| IBAN name check | No | No comparison between an account holder’s name and the IBAN. |
| Account existence | No | No request is sent to the account-holding institution. |
Validate an IBAN from Republic of the Congo via API
The same validation is available through the REST API. The IBAN is sent in the request and is not placed in a public, indexable URL.
curl --get 'https://www.iban-test.eu/api/v2/iban/validate' \
--header 'Authorization: Bearer YOUR_API_TOKEN' \
--data-urlencode 'iban=CG39 3001 3020 0037 1072 1836 132'For this country, the response covers format, structure and checksum without additional bank master data.
What a valid IBAN from Republic of the Congo does not prove
Formal validity is a strong signal against input errors, but it is not real-time confirmation of an account.
No existence confirmation
The account may be closed or unreachable.
No account-holder match
A person or company name is not compared with the IBAN.
No payment guarantee
A valid IBAN does not guarantee that a payment will be accepted.
Registry rules can change
Country formats may be updated when the official registry changes.
Privacy: The input is transmitted only for validation and is not placed in the page URL.