The 6 Best B2B Data Providers in Mexico: No Open Register, One Free Directory (2026)

Mexico has no strong open company register. Incorporation runs through notaries and the Public Registry of Commerce, digitised in a system called SIGER, but access is fragmented across state registries and most substantive acts are paid. The tax authority issues the RFC, the identifier every business carries, and offers a few free verification tools, but there is no single open company file the way some countries have.

What Mexico does have is a genuinely useful free directory: the national statistical directory of economic units, DENUE, lists more than six million businesses with location and activity, free to search and download. Around that sit two credit bureaus, the local D&B operation, and a lively identity-and-KYB fintech sector serving Mexican onboarding. This guide sorts them out.

It ranks {count} providers on merit. We sell Mexican business data ourselves, so our pitch sits in a marked box rather than at number one.

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1. Buró de Crédito: the main credit bureau

Mexico's first and best-known credit bureau, with a dedicated business arm.

Founded in 1996 as Mexico's first credit information society, Buró de Crédito holds consumer and business credit histories, with a dedicated business arm for reports on companies and self-employed individuals. Note a 2026 wrinkle: TransUnion acquired majority ownership of the consumer credit business, but the commercial business was explicitly excluded from that deal, so ownership of the business arm differs. For a Mexican credit check, it is the reference bureau.

Mexico City, Mexico · Quote only · Built on: SAT, Lender submissions, RPC

3. Círculo de Crédito: the second bureau

The second credit bureau, strong in retail and thin-file segments, with a business arm.

Círculo de Crédito is Mexico's second credit information society, regulated alongside Buró de Crédito, offering credit scores, risk and fraud products for individuals and businesses, with a dedicated business bureau. It is particularly strong in retail, microfinance and thin-file populations, which makes it a useful complement to Buró for reaching businesses and owners the main bureau covers less well. A genuine second source for Mexican credit risk.

Mexico City, Mexico · Quote only · Built on: SAT, Lender submissions, RPC

4. Dun & Bradstreet Mexico: the D&B partner

The D-U-N-S file for Mexico, run through the D&B partner for Latin America.

Mexico was Dun & Bradstreet's first international office, and D&B's regional operations run through CIAL Dun & Bradstreet, the official partner for Latin America, with offices across the country. It offers business information, financials, firmographics and D-U-N-S numbering. For a Mexican company inside a global risk or supply-chain picture, or for cross-border trade credit, it is the route into the worldwide D&B file.

Mexico City, Mexico · Quote only · Built on: RPC, SAT, D&B network

5. INEGI DENUE: the free directory

The free national directory of Mexican businesses, the country's best open data source.

DENUE, the national statistical directory of economic units run by the statistics institute INEGI, lists more than six million Mexican businesses with identification, location, activity and size band, free to search on an interactive map, download in bulk, and query via a public API. It is firmographic and geographic, not credit or financial, but as a free national business file it is the best open source Mexico has, and the base many prospecting workflows start from.

Mexico · Free · Built on: INEGI census, Public sources

6. Nubarium: the KYB layer

The Mexican identity-and-KYB API layer, for verifying businesses and people at onboarding.

Founded in 2017 and acquired by Trompo Capital in 2026, Nubarium provides KYB and identity-verification APIs for Mexican onboarding: validation of the RFC and CURP identifiers, INE document and facial checks, and automated document verification. It is infrastructure for fintechs and platforms rather than a company-data file to browse, and it is the kind of verification layer Mexico's fragmented registries make necessary. A modern, local KYB option.

Mexico City, Mexico · API, quoted · Built on: SAT, Government identity sources

How Mexico's data market took shape

Mexico digitised its registries slowly and leaned on the tax system and a free directory instead:

The Mexican data landscape

The bureaus and directory are Mexican-run; the D&B file and some KYB players tie to foreign groups:

No open register, but a free directory

Mexico's official company data is fragmented and largely paid. Incorporation runs through notaries and the Public Registry of Commerce, digitised in the SIGER system, but access is split across state registries and most substantive acts cost money. The tax authority issues the RFC, the identifier every business carries, and offers free tools such as RFC validation and the published list of businesses flagged for phantom invoicing, which are the backbone of Mexican supplier due diligence.

The bright spot is DENUE, the statistics institute's free national directory of more than six million economic units, with location, activity and size, available to search, download and query by API. It is not a legal register or a credit source, but as a free firmographic base it is the best open data Mexico offers. Check the free sources here:

• INEGI DENUE : The free national directory of 6M+ economic units, with location, activity and a public API.
• SAT : The tax authority: free RFC validation and the 69-B list of businesses flagged for phantom invoicing.
• RPC / SIGER : The Public Registry of Commerce, digitised but fragmented across states and largely paid.

Four questions before you sign anything

1. Do you need credit, verification, or a list? For credit, the two bureaus. For onboarding checks on RFC, CURP and INE, a KYB player like Nubarium. For a free firmographic list, DENUE. Three different jobs, three different sources.

2. Have you used the free tools first? SAT's RFC validation and phantom-invoice list, plus the DENUE directory, cover a lot of due diligence and prospecting for nothing. Start there before paying for what they already provide.

3. Do you need the incorporation acts? The Public Registry of Commerce holds the legal acts, but access is fragmented by state and paid. If you need certified filings, budget for the relevant state registry rather than assuming a single national source.

4. Which bureau fits your segment? Buró is the larger, best-known bureau; Círculo is stronger in retail, microfinance and thin-file populations. If your counterparties are small or newer businesses, Círculo may see them better.

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