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 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.