Methodology

Data sources and methodology of the Swiss company database

Keep identity data, contact fields and official market statistics apart. A source can be good for a company’s identity without proving that it can be reached.

Data as of: 4 November 2026 (counted) · Content revised: 4 November 2026

Map sources to fields

  1. Map statements about sources to individual fields. If the company name and a contact detail come from different sources or dates, their currency is not automatically the same.

  2. Record the reference date when importing and keep your own checks separate; the file creation date is not a check date for every row.

Ask about the origin of the data

Sources for Switzerland

The figures of the Swiss company database (as of 4 November 2026) are based on two sources: the commercial register (Zefix via LINDAS, open government data of the Federal Commercial Registry Office) and the open places data of Overture Maps (Places, licence CDLA Permissive 2.0). The other sources in the list are planned or in progress and not yet included in the figures. Figures and counting method are on the page Database status.

  • Commercial register (Zefix on LINDAS) – processed

    Basic data of all active legal entities in the commercial register: company name, legal form, UID, municipality of the registered office, legal domicile and purpose; 796,383 active entities in the file of 1 November 2026, all of them in our database. The Federal Commercial Registry Office publishes them as open government data; use is free, the source must be stated (“Open use. Must provide the source.”). The register contains no contact details.

    opendata.swiss: Zefix · LINDAS · terms of use

  • Overture Maps – processed

    Open place and business data of the Overture Maps Foundation (Places, release 2026-10-21.0) with name, address, phone number, website and email address; Overture combines data from Meta, Microsoft and other sources. Licence CDLA Permissive 2.0. We only count places with a confidence value of at least 0.77, match them to register entries and count places without a certain match as records of their own. We derive canton and municipality from the address, because the source’s regional information is not reliable for Switzerland.

    Overture Maps: attribution · licence CDLA Permissive 2.0

  • OpenStreetMap – planned

    Open map data with shops, practices and businesses (© OpenStreetMap contributors, licence ODbL). Not yet processed.

  • Company websites (legal notice) – collection under way

    Anyone offering goods or services online must give clear and complete information about their identity and contact address including email (Art. 3 para. 1 let. s UWG). Many legal notices also state the UID, which links website and register entry unambiguously. Collection is under way; contacts from the websites are not yet included in the published figures.

  • Open data from the Confederation and cantons – planned

    For example the manufacturers and importers of medical devices published by Swissmedic. We will only use cantonal datasets if their terms of use allow it, and will comply with their conditions. Not yet processed.

What we do not use

We do not use telephone and business directories whose terms of use prohibit bulk queries or building address databases. Professional registers such as the register of medical professions, the audit oversight register or FINMA’s lists are meant for looking up individual persons and companies; at most we use them to check an industry assignment, not as an address source.

The table can be scrolled sideways.

Public sources on businesses in Switzerland and the rules for their use. Statutory texts checked on Fedlex on 25 October 2026.
SourceWhat is public thereWhat applies to use
Commercial register / Zefixentries, articles of association and deeds of foundation, free of charge online (Art. 936 CO)The register is public. The basic data are also available as open government data with a duty to state the source. Zefix data have no legal effect (Art. 14 HRegV).
Swiss Official Gazette of Commercepublications of entries, changes and deletions (Art. 936a CO)freely accessible; suitable for tracking new registrations and deletions
UID registercore attributes of UID units, such as name, address, status in the commercial register and for VATqueries only for individual units (Art. 11 UIDG); planned for checking, not as a source for lists
Telephone directoriesentries with or without the asterisk markingThe asterisk prohibits sales calls and passing on the data for direct marketing; unlisted numbers are treated like numbers with an asterisk (Art. 3 para. 1 let. u UWG). Many directories prohibit bulk queries.
Legal notice detailsidentity and contact address including email (Art. 3 para. 1 let. s UWG), often also UID and phonepublicly accessible; personal data under the FADP for sole proprietorships
Federal Statistical Officeaggregated figures only, for example 649,353 businesses in 2024sizing the market; no information on individual businesses

Not registered in the commercial register are, among others, sole proprietorships with turnover below CHF 100,000, many members of liberal professions, farms and most associations (Art. 931 CO). For them, generally only the details they publish themselves are public.

Market figures and their sources

Besides the counted figures of our database, the home page and the industry cards give official figures. Commercial register – Zefix, open government data of the Federal Commercial Registry Office: 796,383 active entries in the file of 1 November 2026, downloaded via the linked data service LINDAS; free use with attribution (“Open use. Must provide the source.”). Statistics – FSO, Statistics on the structure of businesses (STATENT) 2024: 649,353 businesses (institutional units, reference year 2024; by size class), industry figures from the same statistics by NOGA division and type (table px-x-0602010000_106 and px-x-0602010000_105, table updated 20 August 2026, retrieved 25 October 2026). The commercial register and STATENT count differently and are not directly comparable. EU – Eurostat, Structural Business Statistics (sbs_ovw_act), enterprises in industry, construction and market services 2024: EU-27 33,978,235 (data updated 30 September 2026); Eurostat data © European Union, reuse with acknowledgement of the source (Eurostat copyright notice).

How a record is created

  1. Basis from the commercial register. Each active entry in the Zefix file becomes a record with company name, legal form, UID, registered office and address; each UID counts once. The file only contains legal entities that have not been deleted.
  2. Contact details from open data. Phone number, website and email address currently come from Overture Maps. Company websites are being collected; OpenStreetMap is planned.
  3. Matching. We only match a place from Overture Maps to a register entry if attributes agree with certainty: name and street, address and a word of the name, or the website domain. Places without a certain match remain records of their own; they may be branches of registered businesses or unregistered businesses. Once the websites are evaluated, the UID stated there is added as the strongest attribute (check digit according to the eCH-0097 standard).
  4. Region and industry. We derive canton, municipality and language region from the address, and the industry from the NOGA code where it can be derived from the sources; the records do not yet have an industry assignment.
  5. Duplicates and formats. We convert phone numbers to international format (+41) and check email addresses for formal validity. Addresses shared by three or more places with different names do not count as an own email address.

Matching is automated and cannot be error-free. With identical or very similar names and no UID on the website, the risk of a wrong match is higher.

Phone numbers and the asterisk marking

We do not currently offer a check against the asterisk marking in the telephone directory. We therefore only deliver phone numbers flagged as “not checked” and for purposes outside direct marketing, such as matching in a CRM; the asterisk marking column of the export stays empty.

Legal framework for use

  • Email advertising only with consent. Mass advertising by email, SMS or fax without the customers’ prior consent is unfair competition, also towards businesses (Art. 3 para. 1 let. o UWG). An export contains no consent. We therefore do not offer the data for email campaigns.
  • Telephone advertising is allowed to numbers without the asterisk marking, from a displayed number listed in the directory (Art. 3 para. 1 let. u and v UWG).
  • Direct mail does not need consent under the UWG; you must respect a declared objection.
  • Personal data. The Data Protection Act protects personal data of natural persons (Art. 2 FADP), i.e. details of sole proprietorships and named individuals. Data that a person has made generally accessible and whose processing they have not expressly prohibited may generally be processed (Art. 30 para. 3 FADP). Because the operator is based in the EU, the GDPR applies as well. Information on the processing is under Data subject rights; you can object via Objection.
  • Buyer’s own responsibility. Anyone acquiring data from us is responsible for their own use, including the duty to inform under Art. 19 FADP. We do not provide legal advice.

Known limits

  • Records without a match. Places from Overture Maps that are not matched to a register entry with certainty count as records of their own; branches of registered businesses can therefore appear in addition to the register entry. We confirm the size of your selection in the quotation.
  • Contacts become outdated. Companies change phone numbers, email addresses and websites; time passes between a change and the update of the source.
  • No delivery check. The number of email addresses is not a number of verified mailboxes; a phone number does not confirm that the line can be reached.
  • Generic addresses. Addresses such as info@ or kontakt@ are not personal contacts of decision-makers.
  • Uneven coverage. Industries where websites are common have considerably more contact details than industries whose businesses are rarely online.
  • Region by address. Canton and municipality follow the business address, not the area served or individual locations.

Industry registers: meant for look-ups

Several industries have official registers, such as the register of medical professions, the audit oversight register, FINMA’s lists or the directory of licensed staff leasing businesses. They are used to check the licence of an individual person or company and are not address directories for advertising. What exists in which industry is on the industry pages:

Background: Commercial register, Zefix and UID: what is public and NOGA 2008: industry codes for target group lists. On marketing law: B2B marketing in Switzerland: what the UWG allows.

Report an error

If you find incorrect information in your own record, write to us; we will correct it.

Commercial register details are kept by the cantonal commercial registry office. We correct our record; a lasting correction also requires a change in the register.

How much data is there in your industry?

The database status page shows which figures we publish, each with a date and source.

See database status · Swiss industries