EXHIBIT 13 SECOND AMENDED AND RESTATED REGISTRATION RIGHTS AGREEMENT Dated as of _____, 2001Registration Rights Agreement • May 1st, 2001 • Forstmann Little & Co Sub Debt & Eq MGMT Buyout Par Vii Lp • Telephone communications (no radiotelephone) • New York
EXHIBIT 18 JOINT FILING AGREEMENT The undersigned hereby acknowledge and agree that any amendment to the Schedule 13D, relating to the Class A common stock, par value $0.02 per share, of XO Communications, Inc., on or after the date as of which this...Joint Filing Agreement • May 1st, 2001 • Forstmann Little & Co Sub Debt & Eq MGMT Buyout Par Vii Lp • Telephone communications (no radiotelephone)
This Agreement may be executed in counterparts and each of such counterparts taken together shall constitute one and the same instrument.
EXHIBIT 12 AMENDMENT AND STOCK PURCHASE AGREEMENTStock Purchase Agreement • May 1st, 2001 • Forstmann Little & Co Sub Debt & Eq MGMT Buyout Par Vii Lp • Telephone communications (no radiotelephone) • New York
