Historical clue formulations

• Onetime AT&T competitor — 2026-03-30
• Former AT&T competitor — 2024-04-25
• The year 1101 — 2020-07-10
• 1101, in old Rome — 2019-09-04
• Verizon acquisition of 2006 — 2018-06-19
• Verizon purchase of 2006 — 2017-07-29
• Former telecom giant — 2016-09-27
• Old AT&T rival — 2014-10-06
• Sprint competitor, once — 2014-06-13
• Old long-distance letters — 2012-11-24
• Verizon subsidiary — 2012-10-18
• Former call letters? — 2011-11-06
• Company acquired by Verizon in 2006 — 2011-10-19
• Former telecom giant — 2011-07-20
• 2006 Verizon acquisition — 2011-01-09
• Co. bought by Verizon — 2010-12-09
• Verizon acquisition of 2006 — 2010-08-14
• 2006 Verizon purchase — 2009-08-04
• Telecom giant acquired by Verizon — 2009-06-16
• Co. acquired by Verizon in 2006 — 2009-04-15
• Sprint rival — 2007-05-21
• Long-distance letters — 2007-03-28
• Call letters? — 2006-06-23
• ___ WorldCom — 2004-03-30
• Baby Bell competitor — 2003-07-11
• Long distance letters — 2003-04-07
• Long distance letters — 2002-05-15
• Verizon competitor — 2002-04-27
• Sprint rival — 2002-02-06
• Worldcom partner — 2001-04-20
• Sprint alternative — 2001-02-23
• Sprint rival — 2000-05-19
• AT&T competitor — 2000-03-24
• AT&T rival — 2000-03-08
• AT&T competitor — 2000-02-10
• WorldCom partner — 1999-09-24
• Long distance inits. — 1999-09-13
• AT&T rival — 1999-08-24
• Bell Atlantic competitor — 1998-11-12
• Sprint rival — 1998-05-25
• Big inits. in cellular technology — 1998-04-12
• Sprint competitor — 1998-01-11
• AT&T alternative — 1997-12-01
• Long-distance letters — 1997-04-26
• Sprint rival — 1997-04-23
• Sprint rival — 1996-10-13
• AT and T alternative — 1994-08-03