primarySource
Optional
Register ARES takes the core data from, e.g. basicRegisterOfPersons, publicRegister.
Czech Companies (ARES) - IČO Lookup, VAT & NACE Search
Pricing
from $2.00 / 1,000 results
Czech companies and other legal entities from ARES, the official register of the Czech Ministry of Finance: IČO lookup (100 per request) or search by name, legal form, CZ-NACE, municipality and region, with VAT status. No sole traders. Unofficial; not affiliated with the Ministry of Finance.
ico
Optional
IČO (8 digits). Null for the few registered branches that have no IČO of their own.
aresId
Required
ARES identifier: the IČO, or ARES_ when no IČO is assigned.
name
Optional
Registered name (obchodní firma / název).
legalFormCode
Optional
Legal form code (ARES codebook PravniForma), e.g. 112.
legalForm
Optional
Legal form in Czech, e.g. Společnost s ručením omezeným.
legalFormEn
Optional
Legal form in English (null for forms retired before 2026).
status
Required
active, ceased or unknown (derived from the ARES registrations).
establishedOn
Optional
Date of establishment (YYYY-MM-DD).
ceasedOn
Optional
Date of cessation when ARES gives one (YYYY-MM-DD).
vatRegistered
Optional
True when the entity is an active VAT payer (ARES register DPH).
taxId
Optional
Tax identification number (DIČ), e.g. CZ00177041.
vatGroupTaxId
Optional
DIČ of the VAT group the entity belongs to.
inInsolvencyRegister
Optional
True when the entity has an active record in the insolvency register (ISIR).
naceCodes
Required
CZ-NACE 2025 activity codes.
naceNames
Required
Czech names of naceCodes, same order.
naceCodes2008
Required
CZ-NACE 2008 activity codes (older classification).
municipality
Optional
Municipality of the registered office.
municipalityCode
Optional
RÚIAN municipality code.
postalCode
Optional
Postcode of the registered office (5 digits).
district
Optional
District (okres).
districtCode
Optional
RÚIAN district code.
region
Optional
Region (kraj).
regionCode
Optional
RÚIAN region code.
country
Optional
Country of the registered office.
countryCode
Optional
Country code.
courtFileNumber
Optional
File number in the public register, e.g. B 332/MSPH.
primarySource
Optional
Register ARES takes the core data from, e.g. basicRegisterOfPersons, publicRegister.
registrations
Required
Status of the entity in each source register (active, ceased, historical, not_registered, ...).
activeRegisters
Required
Source registers where the entity is active.
lastUpdated
Optional
Date ARES last updated the record.
aresUrl
Optional
Public ARES page of the entity.
matchedBy
Required
ico (IČO lookup) or search.
source
Required
sourceUrl
Required
license
Required
retrievedAt
Required