Exhibit 23.1



                  Consent of Ernst & Young LLP, Independent Auditors


          We consent to the reference to our firm under the caption
          "Experts" and to the use of our report dated February 13, 1998
          with respect to the consolidated financial statements of NETCOM
          On-Line Communications Services, Inc., in Amendment No. 1 to the 
          Registration Statement (Form S-4 No. 333-60653) and related 
          Prospectus of ICG Services, Inc., dated August 7, 1998.



                                                       ERNST & YOUNG LLP
          San Jose, California
          August 7, 1998