Switzerland has a federated Company registration system. Companies are registered in one of the 26 cantonal registers, and their data is then passed onto the central Federal Central Business Names Index, also known as Zefix.
The main company identifier we are using is the Zefix "EHRA ID" (English: Federal Commercial Registry Office Identifier or "FCRO ID"). This is the primary key used by Zefix to uniquely identify a company in their index. It predates newer IDs such as the Federal Identification Numbers assigned by Cantonal Registers since January 2000 or the Statistical Office-allocated federal Enterprise Identification Numbers allocated since 2011. This allow us to capture a wider variety of older, inactive companies than just those with the most recent identification system. We do store these additional identifiers, and they are shown on the company page, and via the API.
About Swiss Federal Statistical Office Enterprise Identification Number
About Cantonal Register allocated Federal Identification Numbers
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