Phonebook Publisher Hans Müller

Crowdsourcing Project Publisher Müller

Research of company URLs and e-mail addresses

Alongside editor and publisher DeTeMedien, phonebook publisher Hans Müller is the most important telecommunication directory service with its “Gelbe Seiten,” “Das Örtliche” and “DasTelefonbuch” directories.
Our Clickworkers research URLs and e-mail addresses of many companies listed in the phonebook in order to expand data sets and keep them updated.