AT&T
Inc. (Formerly
SBC Communications) (ATTR)
Return to Corporate History Home Page
AT&T
Inc.(formerly SBC Communications, Inc.) is the parent company for BellSouth
Corporation, Southwestern Bell Telephone Company, Pacific Telesis Group,
Ameritech , and Southern New England Telephone.
BellSouth
Corporation (BSTR)
Return
to Corporate History Home Page
1990
- 1991
Prior to 12/31/1991, BellSouth Corporation consisted of two separate operating
companies: South Central Bell Telephone Company (SCTC) consisting of
five study area jurisdictions: Alabama (SCAL), Kentucky (SCKY), Louisiana
(SCLA),Mississippi (SCMS) and Tennessee (SCTN), and Southern Bell Telephone
and Telegraph Company (SBTC) consisting of four study area jurisdictions:
Florida(SBFL), Georgia (SBGA), North Carolina (SBNC), and South Carolina
(SBSC).
Note: For years 1990 and 1991, the ARMIS data for the two operating companies
have been combined under one COSA (BSTR) within the ARMIS system to allow
comparison with later years. Thus, no individual data for COSAs SBTC and
SCTC exists within the ARMIS system.
1992
- 1994
On 1/1/1992, South Central Bell and Southern Bell were merged, forming BellSouth
Telecommunications, Inc. (BSTR), a corporation that is wholly-owned by
BellSouth Corporation.
COSA |
Effect |
SCTC |
Discontinued |
SBTC |
Discontinued |
BSTR |
New
COSA for entity that files as both an operating company and a holding
company |
1995
BellSouth Telecommunications, Inc. had no changes during this period, except
that on 1/1/1995, the names South Central Bell and Southern Bell were
dropped and only BellSouth Telecommunications, Inc. was used.
1996
- 2005
BellSouth Telecommunications, Inc.
had no changes during this period.
2006
BellSouth Telecommunications, Inc. merged with AT&T
on December 29, 2006.
COSA |
Effect |
BSTR |
Brought
under the control of AT&T Inc. |
2007
- 2008
BellSouth Telecommunications, Inc.
had no changes during this period.
Southwestern
Bell Telephone Company (SWTR)
Return
to Corporate History Home Page
1990
- 1995
Prior to 1990, Southwestern Bell Telephone Company was both a holding company
and operating company that consisted of five study area jurisdictions:
Arkansas(SWAR), Kansas (SWKS), Missouri (SWMO), Oklahoma (SWOK), and
Texas (SWTX).
1995
In 1995, a parent holding company named SBC Communications, Inc. was established,
and Southwestern Bell Telephone Company's structural status as a holding
company ceased. However, Southwestern Bell Telephone Company still existed
as an operating company for its five study area jurisdictions.
COSA |
Effect |
SWTR |
Changed
to an operating company only |
1996
- 2008
Southwestern Bell Telephone Company had no changes during this period.
Pacific
Telesis Group (PTTR)
Return
to Corporate History Home Page
1990
- 1996
Prior to 1990, Pacific Telesis Group was a holding company for two operating
companies with one study area jurisdiction each: Pacific Bell, California(PTCA)
and Nevada Bell, Nevada (PTNV).
1997
SBC Communications, Inc. acquired Pacific Telesis Group on 4/1/1997. SBC
Communications, Inc., however, kept Pacific Telesis Group and its operating
companies as separate reporting entities.
COSA |
Effect |
PTTR |
Brought
under the control of SBC Communications, Inc. |
1998
- 2008
Pacific Telesis Group had no changes during this period.
Ameritech
Corporation (AMTR)
Return
to Corporate History Home Page
1990
- 1998
Ameritech had no changes during this period. Prior to 1990, Ameritech was
holding company for five operating companies with one study area jurisdiction
for each: Illinois Bell (LBIL), Indiana Bell (NBIN), Michigan Bell (MBMI),
Ohio Bell (OBOH) and Wisconsin Bell (WTWI).
1999
Ameritech was acquired by SBC Communications, Inc. on 10/8/1999. SBC Communications,
however, kept Ameritech and its operating companies as separate reporting
entity.
COSA |
Effect |
AMTR |
Brought
under the control of SBC Communications |
2000
- 2008
Ameritech had no changes during this period.
Southern
New England Telecommunications Corporation (SNCT)
Return
to Corporate History Home Page
1990
- 1997
Southern New England Telecommunications Corporation had no changes during
this period. Southern New England Telecommunications Corporation is a
holding and operating company with one study area jurisdiction. The Southern
New England Telephone Company is the operating company with one study
area jurisdiction: Connecticut.
1998
- 1999
SBC Communications, Inc. acquired Southern New England Telecommunications
Corporation on 10/26/1998. SBC Communications, Inc., however, kept Southern
New England Telecommunications Corporation as a separate reporting entity.
COSA |
Effect |
SNCT |
Brought
under the control of SBC Communications, Inc. |
2000
- 2008
Southern New England Telecommunications Corporation had no changes during
this period.
|
