1990 - 1995
Citizens Telecommunications Company of the Golden State did not exist as an operating company. 1996
Citizens Telecommunications Company of the Golden State became a new operating company and study area jurisdiction when it acquired the study area jurisdiction California from Alltel on 12/31/1995. COSA
| Effect
| CTCA | New operating company and study area COSA created when transferred control from Alltel. |
1997 - 1999
Citizens Telecommunications Company of the Golden State had no changes during this period. 2000
During this period, Citizens purchased study areas and exchanges from a number of ILECs, which required it to reorganize its corporate structure. Citizens Telecommunications Company of the Golden State, formerly operating company/study area, was disaggregated into a separate operating company and study area. The study area continued with the original COSA (CTCA) and the operating company was given a new COSA (CTGS). COSA
| Effect
| CTGS | New operating company COSA. | CTCA | Changed from an operating company/study area to a study area; renamed Citizens Telecom. Co. of Golden State – Colusa. |
2001 - 2008
Citizens Telecommunications Company of the Golden State had no changes during this period. However, on December 31, 2008, Colusa California (CTCA) was reclassified, becoming a study area under Citizens Telecom. Co. of California (CTCC), and Citizens Telecommunications Company of the Golden State (CTGS) was discontinued. COSA
| Effect
| CTGS | Discontinued operating company COSA. | CTCA | Changed from an operating company/study area to a study area under Citizens Telecom. Co. of California (CTCC). |
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