- Ameritech — (acquired by SBC Communications in 1999)
- Bell Atlantic — (acquired GTE in 2000 and changed its name to Verizon)
- BellSouth — (acquired by AT&T Inc. in 2006)
- NYNEX — (acquired by Bell Atlantic in 1996)
- Pacific Telesis — (acquired by SBC in 1997)
- Southwestern Bell — (changed its name to SBC in 1995; acquired AT&T Corp. in 2005 and changed its name to AT&T Inc.)
- U S West — (acquired by Qwest in 2000)
The free market knows what to do.