MBS / OIB lookup

Type a Croatian MBS (the court-register number) or an OIB and get the company from the Croatian court register (Sudski registar): legal name, legal form, status, registered address and activity code, live. The MBS format and the OIB check digit are verified in your browser first.

What an MBS and an OIB are

The MBS (matični broj subjekta) is the number a legal entity holds in the Croatian court register: nine digits, for example 080000604 for INA - Industrija nafte d.d. Its check digit is advisory. The register itself documents a few legacy numbers whose check digit does not match, so a mismatch is shown as a warning and the number is still looked up.

The OIB (osobni identifikacijski broj) is the 11-digit personal and business tax number, with an ISO 7064 MOD 11,10 check digit: 27759560625 is the OIB of the same company. It is issued to companies and to individuals alike, so a valid OIB does not say which. The Croatian VAT number is HR plus the OIB (HR27759560625). The two numbers are different and neither can be worked out from the other: the lookup reads nine digits as an MBS and eleven as an OIB.

What the lookup returns

The lookup sends the number to the Prometiam API and returns the name, legal form, status and city of the record. Company records from the Croatian court register (Sudski registar): legal name, legal form, status, registered address, activity code and dates; no officers, no corporate-event stream, no monitoring, no registry-compliance signal and no insolvency notices, and sole traders (trgovac pojedinac) are never served. Croatia is updated every working day.

The full record is one call away. Free — 14-day trial. 1,000 API calls per month, 10 requests/minute, no credit card. Subscribing keeps the same key working.

Izvor: Sudski registar, Ministarstvo pravosuđa, uprave i digitalne transformacije (Otvorena dozvola)

FAQ

Is the MBS the same as the OIB?
No. The MBS is the court-register number of a legal entity and the OIB is the tax number, and one cannot be worked out from the other. The lookup takes either: nine digits are read as an MBS, eleven as an OIB.

Is the OIB the same as the VAT number?
It is the basis of it: the Croatian VAT number is HR plus the OIB. The API resolves the VAT form to the same company as the OIB.

Why does a valid number return nothing?
Sole traders (trgovac pojedinac) are never served, and a company registered very recently may not be in the record yet. Try the name search.

Can I do this in code?
Yes: GET /companies/search?company_number=080000604&country=HR with an API key returns the same record as JSON; the oib parameter takes 27759560625 and the vat parameter takes HR27759560625.

Open the lookup · Get a free API key

Frequently asked questions

Is the MBS the same as the OIB?
No. The MBS is the court-register number of a legal entity and the OIB is the tax number, and one cannot be worked out from the other. The lookup takes either: nine digits are read as an MBS, eleven as an OIB.
Is the OIB the same as the VAT number?
It is the basis of it: the Croatian VAT number is HR plus the OIB. The API resolves the VAT form to the same company as the OIB.
Why does a valid number return nothing?
Sole traders (trgovac pojedinac) are never served, and a company registered very recently may not be in the record yet. Try the name search.
Can I do this in code?
Yes: GET /companies/search?company_number=080000604&country=HR with an API key returns the same record as JSON; the oib parameter takes 27759560625 and the vat parameter takes HR27759560625.