Generate a test Croatia Osobni identifikacijski broj
A Croatian OIB is an eleven-digit personal/business identifier with an ISO 7064 MOD 11,10 check digit. These test values are synthetic but checksum-valid.
Synthetic · not collision-guaranteed Validate a number →
60599267499
Synthetic OIB with a valid check digit. Not a real issued number.
Format specification
| Identifier | Osobni identifikacijski broj (OIB) |
|---|---|
| Country | 🇭🇷 Croatia |
| Format | 00000000000 |
| Length | 11 characters |
| Checksum | ISO 7064 (MOD 11,10) |
| Example | 72913633531 |
| Safe strategy | Synthetic |
| Data quality | Verified against sources |
Validation regex
Matches the canonical value — strip separators and uppercase first: value.replace(/[^A-Za-z0-9]/g, '').toUpperCase()
^\d{11}$ References
Common questions
Will these pass my validation?
Yes — they are well-formed Osobni identifikacijski broj values (00000000000) and pass standard format checks, including the ISO 7064 (MOD 11,10) checksum.
Could one belong to a real person?
These are synthetic values. They are format-valid but not drawn from a guaranteed reserved range, so use them only for testing.
Can I generate many at once?
Increase the count, or use the free API and CSV/JSON export for large datasets.
For software testing only. These numbers are synthetic and must never be used
for real-world identification, applications, or to impersonate anyone.