List of Subsidiaries of AT&T Corp. As of 3/17/99 Jurisdiction of Incorporation ACC Corp............................................Delaware Alascom, Inc........................................Alaska AT&T Canada Corp....................................Canada AT&T Communications, Inc............................Delaware AT&T Communications of California, Inc..............California AT&T Communications of Delaware, Inc................Delaware AT&T Communications of Hawaii, Inc..................Hawaii AT&T Communications of Illinois, Inc................Illinois AT&T Communications of Indiana, Inc.................Indiana AT&T Communications of Maryland, Inc................Maryland AT&T Communications of Michigan, Inc................Michigan AT&T Communications of the Midwest, Inc.............Iowa AT&T Communications of the Mountain States, Inc.....Colorado AT&T Communications of Nevada, Inc..................Nevada AT&T Communications of New England, Inc.............New York AT&T Communications of New Hampshire, Inc...........New Hampshire AT&T Communications of New Jersey, Inc..............New Jersey AT&T Communications of New York, Inc................New York AT&T Communications of Ohio, Inc....................Ohio AT&T Communications of the Pacific Northwest, Inc...Washington AT&T Communications of Pennsylvania, Inc............Pennsylvania AT&T Communications of the South Central States,Inc.Delaware AT&T Communications of the Southern States, Inc.....New York AT&T Communications of the Southwest, Inc...........Delaware AT&T Communications of Virginia, Inc................Virginia AT&T Communications of Washington D.C., Inc.........New York AT&T Communications of West Virginia, Inc...........West Virginia AT&T Communications of Wisconsin, Inc...............Wisconsin AT&T Communications Services International Inc......Delaware AT&T Communications (UK) LTD........................United Kingdom AT&T Global Communications Services Inc.............Delaware AT&T Istel..........................................United Kingdom AT&T Solutions Inc..................................Delaware AT&T of Puerto Rico, Inc............................New York AT&T Wireless Services, Inc.........................Delaware LIN Broadcasting Corporation........................Delaware Lucky Dog Phone Company Inc.........................Delaware Teleport Communications Group Inc...................Delaware Tele-Communications, Inc............................Delaware