A system and method for determining network relationships with unreliable data. An identifier of an addressable network element may be associated with a non-addressable network element. A first set of data is generated that associates a first identifier of each of a plurality of first addressable network elements in the network to one of a plurality of non-addressable network elements in the network to which the first addressable network elements are connected. A second data is generated that associates the first identifier of each of the plurality of the first addressable network elements to one of a plurality of second identifiers of a second addressable network element. When at least a threshold measure of the first set of first identifiers matches the second set of first identifiers, the second identifier is associated with the non-addressable network element.