In some examples, a method includes identifying, by an interconnect engine executing at a computing device, based at least in part on querying telemetry data that indicates interconnections established between interconnection facility customers within a plurality of interconnection facilities by an interconnection facility provider, a set of existing interconnections between a particular interconnection facility customer and at least one target interconnection facility customer within the plurality of interconnection facilities; generating, by the interconnect engine and based at least on part on the set of existing interconnections, a set of prospective interconnections between the particular interconnection facility customer and the target interconnection facility customers for at least one interconnection facility of the plurality of interconnection facilities, wherein the set of prospective interconnections are not included in the telemetry data; and outputting, by the interconnect engine and for display to the particular interconnection facility customer, data indicating the prospective interconnections.