EXHIBIT 23.3 CONSENT OF KPMG LLP, INDEPENDENT AUDITORS We consent to the inclusion herein of our report dated April 2, 1999, with respect to the balance sheet of Prio, Inc. (a development stage enterprise) as of December 31, 1998, and the related statements of operations, shareholders' deficiency, and cash flows for each of the years in the two-year period ended December 31, 1998, which report appears in this Post-effective Amendment No. 3 to the registration statement on Form S-1 of InfoSpace, Inc. We also consent to the references to our firm under the headings "Selected Consolidated Financial Data" and "Experts". /s/ KPMG LLP Mountain View, California September 7, 2000