The 21st Century is marked with the development society that has close relationships with microelectronics network, network society. According to Manuell Castells, the network society is a society using microelectronic network as the basis of its activity. In this study, researchers sought to formulate a paradigm of network librarianship by building a common ontology which is then reflected by Manuel Castells network society theory. This study used a qualitative approach with philosophical approach. Documents are used for collecting the data and analysis. Researchers used hermeneutics approach by Hans Georg Gadamer. Research results showed that the unique characteristics of the network society found by Manuel Castells. As we known, the evolution chain of society had a serious implication for human being. Librarianship need to evaluate and rethink their based scientific paradigm to seek information phenomena being, especially for 21st century.