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In 1982, Blue Shield merged with The Blue Cross Association to form the Blue Cross and Blue Shield Association (BCBS). [11] Prior to 1986, organizations administering BCBS were tax exempt under 501(c)(4) as social welfare plans. The Tax Reform Act of 1986 revoked the exemption, however, because the plans sold commercial-type insurance.
Numbering plan areas and area codes of Texas (tan). This is a list of area codes in the U.S. state of Texas. The date of establishment of each area code is indicated in parentheses: [1] 210: San Antonio area; overlays with 726 (November 1, 1992) 214: Dallas area, overlays with 469, 972, and 945 (October 1947)
The North American Numbering Plan (NANP) divides the territories of its members into geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits.
Toll-free telephone numbers in the North American Numbering Plan have the area code prefix 800, 833, 844, 855, 866, 877, or 888. Additionally, area codes 822, 880 through 887, and 889 are reserved for toll-free use in the future. 811 is excluded because it is a special dialing code in the group NXX for various other purposes.
As a result, prefixes were duplicated in both area codes, which counteracted much of the benefit of the division, with only 200 of 700 prefixes in area 612 transferring entirely to area 651. In less than two years, area code 612 again exhausted its supply of telephone numbers, and necessitated a three-way division in 2000, creating the new area ...
The northeastern part of Texas, roughly from a line just west of Dallas to Waco, to the borders of Arkansas and Louisiana, had been assigned area code 214. In 1953, area code 817 was created in a flash-cut from the eastern half of 915, approximately to the area of Abilene , creating a numbering plan area in central Texas to the Texoma border ...
Many numbering plan administrators subdivide their territory of service into geographic regions designated by a prefix, often called an area code or city code, which is a set of digits forming the most-significant part of the dialing sequence to reach a telephone subscriber.
Numbering plan areas and area codes of Texas with numbering plan area 940 highlighted. Area code 940 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Texas in the Wichita Falls and Denton areas. It was created on July 7, 1997, in a split from area code 817.