Disclosed are methods and devices for a social networking device 102. The methods include calculating a value for a social networking index 460 for contacts in a contact list 103, and prioritizing a subset of contacts 462. IP addresses of contacts retrieved 468 from the Internet according to the social networking index can be preloaded 470 for the initiation of an IP based communication 474. The social networking index is generated from values of predetermined statistics 130 associated with contacts of the contact list. The statistics associated with contacts of a contact list include 464 a number of communications with a contact, a statistical value calculated from lengths of communications with a contact, a time since a last communication with a contact and a statistical value calculated from times between at least two consecutive communications with a contact. Calculating a social networking index 460 can include applying weights 466 with which to combine the values of the predetermined statistics.