Abstract: A synthetic identity detection network may include a communications interface, one or more processors, and a memory having instructions stored thereon. The instructions cause the processors to receive a data inquiry from a requesting system. The data inquiry may include personally identifiable information (PII) data associated with a user. The instructions cause the processors to match the PII data to a plurality of user identities. Each user identity may be associated with at least a portion of the PII data. The instructions cause the processors to identify account statuses associated with accounts associated with the user identities. The instructions cause the processors to generate a code based at least in part on a count of the user identities and the account statuses. The code provides an indication of a likelihood of the user being a synthetic identity. The instructions cause the processors to transmit the code to the requesting system.