We manage address and telephone data for the whole of Switzerland and the Principality of Liechtenstein.

High-quality addresses & telephone numbers

Information services, CRM/ERP solutions, emergency services and customer databases all rely on our high-quality data and services.

Up-to-date business and residential addresses

For fewer returns and customer losses, and optimised customer services and acquisition – online and offline.


The comprehensive address management solution

Multisource BASIC

For up-to-date address data.

Multisource PLUS

Almost 100% of relocation mutations available in Switzerland

Multisource RESEARCH

Efficient recording of postal returns

Multisource ANALYTICS

The web tool for analysing customer bases and segments

Multisource ENRICH

Enrichment of valuable additional criteria for greater accuracy

Complete, structured and up-to-date – directoriesDATA address services


Complete, up-to-date directory data 

ETV Internet

The perfect tool for retrieving and exporting required address data advert-free.


ETV Access

Your tool for accessing up-to-date directory data from directoriesDATA.

ETV Inside

Caller ID: we offer caller ID for VoIP and CTI solutions.