Türkiye in depth: eKYB: verify Turkish companies by tax number
Company verification · Apivom Atlas
Verify a company against the official register, in 14 sources worldwide.
Apivom Atlas puts the official company registers of Türkiye (MERSIS¹, via TOBB²), Europe, the Americas, the Middle East and Asia-Pacific, plus two global directories, behind one REST API with one key and one prepaid balance. Send the identifier you have and get back what the authority publishes.
¹ MERSİS: Central Registration System of the Türkiye Ministry of Trade² TOBB: The Union of Chambers and Commodity Exchanges of Türkiye
14
official sources
10
countries
2
global directories
// Why one API
Fourteen registers, fourteen ways to ask.
Every authority publishes its own identifier, its own response format and its own access rules. Checking counterparties in more than one country usually means building and maintaining each integration yourself.
Register by register
- A separate integration for every authority
- A different identifier each time: tax number, IČO, KRS number, SIREN, UEN, LEI
- Different response shapes and field names
- Rate limits and access rules to track yourself
- No single record of who asked what
Slow to build, and easy to let drift when a registry changes its API.
Through Apivom Atlas
- One REST interface and one Apivom Atlas key
- Each source documented on its own guide page, with its routes and inputs
- One prepaid balance, priced per lookup
- Repeat queries served from cache at no charge
- Every query logged
You still ask each register its own question, and the answer is still the register’s own record, as published.
Official sources
Every source is the authority’s own API or open dataset.
Priced per lookup
No platform fee. Each lookup has a listed price, shown below.
Documented per source
Each guide page lists the routes, what they return and typical use cases.
// Türkiye
The flagship: Turkish trade and tax registers
MERSIS company cards come in four detail levels plus a branch card; the Türmob taxpayer card is a single lookup.
Mersis Company Card (TOBB) API
TOBBOfficial Turkish trade-registry (MERSIS) company data as a prepaid, per-query priced REST API: four company-card detail levels plus branch cards.
Türmob Taxpayer Card (GİB³) API
TÜRMOBOfficial Turkish taxpayer (GİB) record by tax number as a prepaid, per-query priced REST API: title, tax office, status, addresses and NACE activities via TÜRMOB.
³ GİB: Turkish Revenue Administration
// Europe
Five European company registers
Czechia, Poland, Finland, Norway and France, each answering to its own identifier, with name search where the register offers it.
Czechia ARES Company Register API
MINISTERSTVO FINANCÍ ČRLook up any Czech economic subject in ARES, the Ministry of Finance's register of registers: full record by 8-digit IČO or search by trade name and registered seat — including VAT (DIČ) status — through Apivom Atlas.
Finland Business Register API (YTJ)
PRH / VEROHALLINTOSearch the Finnish Business Information System (YTJ) maintained by PRH and the Tax Administration: companies by name or Business ID with registered names, forms, addresses, trade-register and VAT registrations — through Apivom Atlas.
France Company Search API (Recherche d'entreprises)
DINUM (DATA.GOUV.FR)Search every French company and establishment by name, SIREN/SIRET, postcode, NAF code or department — INSEE Sirene merged with INPI's RNE, including officers and beneficial owners — through Apivom Atlas.
Norway Company Register API (Brønnøysundregistrene)
BRØNNØYSUNDREGISTRENELook up any Norwegian enterprise in the official Enhetsregisteret: full entity record by 9-digit organisasjonsnummer, or search by name, organisation number or municipality — through Apivom Atlas.
Poland KRS Company Register API
MINISTERSTWO SPRAWIEDLIWOŚCIOfficial extracts from Poland's National Court Register (KRS): the current extract (odpis aktualny) and the full historical extract (odpis pełny) for any KRS number, from the Ministry of Justice — through Apivom Atlas.
// Americas
United States and Costa Rica
Business entities registered in Colorado, SEC filings for every registrant, and taxpayer records from Costa Rica’s Ministry of Finance.
Colorado Business Entities API (Secretary of State)
COLORADO SECRETARY OF STATESearch every business entity registered with the Colorado Secretary of State — name, entity id, status, type, formation date, principal and agent addresses — from the state's Socrata open-data feed, through Apivom Atlas.
Costa Rica Taxpayer Lookup API (Hacienda ATV)
MINISTERIO DE HACIENDA (COSTA RICA)Look up any Costa Rican taxpayer by identification number in the Ministry of Finance's ATV register: legal and trade name, tax regime, registration status and economic activities — the check behind every electronic invoice in Costa Rica, through Apivom Atlas.
SEC EDGAR Company Filings & XBRL API
U.S. SECCompany filing history and standardised XBRL financial facts for every SEC registrant by CIK — 10-K, 10-Q, 8-K metadata plus revenue, assets, EPS and hundreds of other tagged concepts — through Apivom Atlas.
// Middle East & Asia-Pacific
Israel and Singapore open-data registries
Both are government open-data portals with many datasets. You query the datasets that hold the company registers, Israel’s Corporations Authority and Singapore’s ACRA among them.
Israel Open Data (data.gov.il) Registry API
DATA.GOV.ILQuery Israel's national open-data catalog through the CKAN Action API — search datasets, read dataset metadata and pull rows from any resource, including the Corporations Authority company registry.
Singapore Open Data (data.gov.sg) Dataset API
DATA.GOV.SGQuery rows of any Singapore government dataset published on data.gov.sg by resource id — ACRA entity listings, licences, HDB and statistics releases — with free-text filtering and paging, through Apivom Atlas.
// Global
Identity beyond a single country
Legal Entity Identifier records from the Global LEI Foundation, and the OpenPeppol directory of e-invoicing participants.
GLEIF LEI Lookup API
GLEIFLegal Entity Identifier records from the Global LEI Foundation as a REST API: search by LEI, legal name or country, fetch a full LEI record, or autocomplete names — the global, free-to-reuse key for entity identification.
Peppol Directory Participant Search API
OPENPEPPOLSearch the OpenPeppol Directory for e-invoicing participants by participant id, name, country or free text and learn which document types they can receive — the pre-flight check for every Peppol e-invoice.
// What you can check
The questions a register can answer.
What comes back depends on the register. These are the checks the sources above publish.
Does it exist, and is it active?
Registered name, legal form and address from the Czech, Finnish, Norwegian, French and Colorado registers and from MERSIS in Türkiye, with status where the register publishes it.
Who owns it and who can sign?
Partners, board members and representatives from MERSIS and the Polish KRS extracts, and officers and beneficial owners from the French register where published.
What is its tax or VAT status?
Taxpayer records for Türkiye (Türmob) and Costa Rica (Hacienda), plus VAT data in the Czech, Finnish and Norwegian registers.
What does it file and report?
Filing history and standardised financial facts for every SEC registrant, by CIK.
What is its global identifier?
LEI records with legal name, registration authority, status and parent relationships.
Can it receive e-invoices?
Peppol participants and the document types they can receive, and Costa Rica’s Hacienda record, the check behind electronic invoicing there.
// Pricing
Pay per lookup. No platform fee.
Prices are in USD, exclude VAT and are charged against a prepaid Apivom Atlas balance. The pricing page and each guide hold the current figures.
Outside Türkiye: $0.05 per lookup
Each of the twelve sources outside Türkiye costs $0.05 per successful lookup, whichever route you call.
Türkiye: priced by depth
MERSIS company cards run from $0.40 to $1.55 depending on the detail level, and the Türmob taxpayer card is $1.00. A lookup that finds no record is free.
Repeats are free
A repeat of the same query that is answered from the Atlas cache costs nothing.
Prices and prepayment terms: Apivom pricing
Apivom is not the data source
Outside Türkiye these registers publish open APIs that need no credential of their own. What you pay Apivom for is one keyed, cached and logged interface to them. Coverage, freshness and accuracy stay with each authority, and Apivom does not verify or guarantee the records.
// Know the limits
What this is, and what it is not.
Fields differ by register
Depth tiers exist only for MERSIS (four levels) and Poland’s KRS (current or full extract). Do not expect the same fields from every country.
Some sources are datasets
Israel and Singapore are open-data portals. You query a dataset by its resource id and receive its own field names.
Coverage is per source
Colorado is one US state, SEC EDGAR covers SEC registrants only, and every other source covers its own country.
Data as published
A result is the register’s record at query time. It is not a legal certificate, and the authority is responsible for its accuracy.
// FAQ
Questions about company verification
Which registries does Apivom Atlas cover?
Fourteen sources: MERSIS and the Türmob taxpayer record for Türkiye; the registers of Czechia, Poland, Finland, Norway and France; Colorado business entities, SEC EDGAR and Costa Rica’s Hacienda taxpayer register in the Americas; the open-data portals of Israel and Singapore; and two global directories, GLEIF LEI and the Peppol Directory.
How much does a lookup cost?
Outside Türkiye, $0.05 per successful lookup. In Türkiye, MERSIS company cards run from $0.40 to $1.55 depending on detail level, and the Türmob taxpayer card is $1.00. Prices are in USD, exclude VAT and are charged against a prepaid balance. See the pricing page for the current figures and terms.
Do I need an account with each registry?
No. You call every source with your Apivom Atlas key. Outside Türkiye the registers publish open APIs that need no credential of their own, so there is nothing else to sign up for.
How is this different from company data enrichment?
This page is about official registers: legal status, registered address, officers and tax status as the authority holds them. Company data enrichment is about commercial B2B data you buy from a provider such as Apollo or ZoomInfo, using your own account. The two answer different questions and work well together.
Can I use these registers from Apivom Iris?
Today a company record’s Enrich action in Apivom Iris uses MERSIS, Türmob and Google Maps. The other registers are reached through the Atlas API.
What if the country I need is not listed?
The sources on this page are the ones live today. Tell us which register you need and we will look at adding it.
Related solutions: Company data enrichment · eKYB: company verification
Verify your first company.
Tell us which registers you need and we will walk you through the lookups.
Registry information is obtained from the official sources named on this page. The accuracy of the information is the responsibility of the source institutions. Apivom is an independent service provider and is not affiliated with or endorsed by any of these authorities.