How to search the Mexico company registry (RFC lookup).
The official, free tools to check one company in Mexico, what each returns, the RFC format, and how to get every company at once.
Official lookup tools
DENUE (Directorio Estadístico Nacional de Unidades Económicas)
- Run by
- INEGI
- Search by
- name, activity (SCIAN), location
- What you get
- establishments with activity, size band, address and, where declared, phone, e-mail and website
- Address
www.inegi.org.mx
SIGER 2.0, Registro Público de Comercio
- Run by
- Secretaría de Economía
- Search by
- company records (account required)
- What you get
- commercial-registry filings: incorporation, powers, amendments
- Address
rpc.economia.gob.mx
Links checked on 2026-11-10. The sites are in Spanish or Portuguese.
Mexico has no free national lookup that returns a company by RFC with its registry data: the DENUE is the public directory of business establishments (the LatSouth Mexico file is built from it), and the commercial registry sits behind SIGER's login.
The RFC format
Companies (personas morales) have a 12-character RFC: 3 letters from the name, the 6-digit date of incorporation (YYMMDD) and a 3-character homoclave. INEGI's DENUE identifies establishments with its own key and does not publish the RFC.
Every company at once
The lookups answer "does this company exist, and is it active?" one company at a time. For market sizing, territory planning or a prospect list you need the whole register, filtered by industry and state: Mexico company data shows the counts by sector and state for free, with a 25-row sample, built from the INEGI DENUE.
Questions
How do I look up a company in Mexico?
Start with DENUE (Directorio Estadístico Nacional de Unidades Económicas), run by INEGI: it is free and needs no account. The table lists what it returns.
What is the RFC format?
Companies (personas morales) have a 12-character RFC: 3 letters from the name, the 6-digit date of incorporation (YYMMDD) and a 3-character homoclave. INEGI's DENUE identifies establishments with its own key and does not publish the RFC.
Can I get a list of all companies in Mexico?
Not from the lookup tools, which return one company at a time. LatSouth publishes counts by sector and state and sells the full file in English, built from the INEGI DENUE.
Other countries
All of Mexico's companies, not one at a time.
Counts by sector and state, a free sample and the full file in English.