RBOC

RBOC (Regional Bell Operating Company)

When ATT was broken up into 7 separate companies, each of the new geographically limited companies was referred to as a: Regional Bell Operatiing Company or RBOC.

The seven RBOCs were:

• Ameritech
  • Illinois
  • Indiana
  • Michigan
  • Ohio
  • Wisconsin

• Bell Atlantic
  • Maryland
  • Virginia
  • West Virginia
  • Washington D.C.

• Bell South
  • North Carolina
  • South Carolina
  • Georgia
  • Florida
  • Alabama
  • Louisiana
  • Mississippi
  • Tennessee
  • Kentucky

• NYNEX
  • New York
  • Maine
  • Massachusetts
  • New Hampshire
  • Vermont
  • Rhode Island

• Pacific Telesis Group
  • California
  • Nevada

• Southwestern Bell
  • Texas
  • Oklahoma
  • Kansas
  • Missouri
  • Arkansas

• US WEST
  • Washington
  • Oregon
  • Montana
  • North Dakota
  • South Dakota
  • Minnesota
  • Idaho
  • Iowa
  • Wyoming
  • Nevada
  • Nebraska
  • Utah
  • Colorado
  • Arizona
  • New Mexico

These 7 companies have morphed into 4:

• SBC
• Bell South
• Verizon
• Quest

Now the term ILEC is often used to refer to these companies.