Exhibit 10.1 FORM OF REGISTRATION RIGHTS AND TRANSFER RESTRICTION AGREEMENT This AGREEMENT (this "Agreement"), dated as of [ ], 2006, among Level 3 Communications, Inc., a Delaware corporation ("Company"), MCCC ICG Holdings LLC, a Delaware limited...Registration Rights and Transfer Restriction Agreement • April 19th, 2006 • Level 3 Communications Inc • Telephone communications (no radiotelephone) • New York
