An apparatus for expanding contacts for a social networking platform includes at least a processor communicatively connected to a user device and a memory communicatively connected to the processor. The memory contains instructions configuring the at least a processor to determine potential contacts for a user with an automated process including identifying a user identification on an immutable sequential listing, retrieving activity data linked to the user identification, retrieving a body of sets of user activity data as a function of the activity data, and identifying potential contacts by generating a match function between the user and each set of the sets of the user activity data. Processor further receives a selection input from the user device selecting a contact of the potential contacts, delivers an information request about the user to a selected contact device, and receives an information response from the selected contact device.