An online address book system having sufficient hardware and software to operate an address book user interface and to perform intelligent interpretations of voice and text inputs from users. The system includes at least one server software module that includes software to perform a plurality of functions. These include the ability to receive voice input data and separate user voice queries, wherein the software can arrange the data so as to create a data base that includes at least three access dimensions, including contact access, contact-relationship access and contact-time frame access, and so as to create a connectivity matrix based on a plurality of contact pair relationships applying connective recognition logic. The system provides a voice operated user interface that permits access to address book stored data based on user input selected from the group consisting of contact, a contact-relationship pair, a contact-time frame pair, and combinations thereof.