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| industry = Telecommunications
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| num_employees = 139,000 (Dec 2014)〔(【引用サイトリンク】title=Comcast, Form 10-K, Annual Report, Filing Date Feb 27, 2015 )〕
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Comcast Corporation, formerly registered as Comcast Holdings,〔Before the AT&T merger in 2001, the parent company was Comcast Holdings Corporation. Comcast Holdings Corporation now refers to a subsidiary of Comcast Corporation, not the parent company (see: (Bloomberg profile on Comcast Holdings Corporation )). Technically, the current parent company was founded December 7, 2001 as CAB Holdings Corporation, which changed its name to AT&T Comcast Corporation before finally taking on the Comcast Corporation name (see: (Nov 2002 8K/A Form ) and (Nov 2002 S-4 )).〕 is an American multinational mass media company and is the largest broadcasting and largest cable company in the world by revenue.〔 It is the second largest pay-TV company after the AT&T-DirecTV acquisition, largest cable TV company and largest home Internet service provider in the United States,〔(【引用サイトリンク】url=http://broadbandnow.com/Comcast )〕 and the nation's third largest home telephone service provider. Comcast services U.S. residential and commercial customers in 40 states and the District of Columbia.〔(Comcast 2008 Form 10-K ), files.shareholder.com〕 The company's headquarters are located in Philadelphia, Pennsylvania.
As the owner of the international media company NBCUniversal since 2011,〔(【引用サイトリンク】title=Comcast, Form 8-K, Current Report, Filing Date Jan 31, 2011 )〕〔(【引用サイトリンク】title=Comcast, Form 8-K, Current Report, Filing Date Feb 12, 2013 )〕〔(【引用サイトリンク】title=Comcast, Form 8-K, Current Report, Filing Date Mar 19, 2013 )〕〔(2013-03-19) (). Deadline, "Comcast Completes Acquisition Of GE’s 49% Stake In NBCUniversal". Retrieved on March 19, 2013.〕 Comcast is a producer of feature films and television programs intended for theatrical exhibition and over-the-air and cable television broadcast.
Comcast operates multiple cable-only channels (including E! Entertainment Television, the Golf Channel, and NBCSN), over-the-air national broadcast network channels (NBC and Telemundo), the film production studio Universal Pictures, and Universal Parks & Resorts, with a global total of nearly 200 family entertainment locations and attractions in the U.S. and several other countries including U.A.E., South Korea, Russia and China, with several new locations reportedly planned and being developed for future operation.〔(【引用サイトリンク】title=Comcast, Form 10-K, Annual Report, Filing Date Feb 21, 2013 )〕 Comcast also has significant holding in digital distribution (thePlatform). In February 2014 the company agreed to merge with Time Warner Cable in an equity swap deal worth $45.2 billion. Under the terms of the agreement Comcast was to acquire 100% of Time Warner Cable.〔(Comcast and Time Warner Cable to merge in $45.2bn deal ). ''Broadcast Communications''. Retrieved on February 14, 2014.〕 However, on April 24, 2015, Comcast terminated the agreement.
Comcast has been criticized for multiple reasons. The company's customer satisfaction often ranks among the lowest in the cable industry.〔(J.D. Power Releases 2008 Residential Television Service Satisfaction Survey ). News.ecoustics.com. Retrieved on July 8, 2011.〕 Comcast has violated net neutrality practices in the past; and, despite Comcast's commitment to a narrow definition of net neutrality, critics advocate a definition of which precludes distinction between Comcast's private network services and the rest of the Internet.〔Modine, Austin. (January 21, 2009) (TheRegister.co.uk ). TheRegister.co.uk. Retrieved on July 8, 2011.〕 Critics also point out a lack of competition in the vast majority of Comcast's service area; there is limited competition among cable providers. Given Comcast's negotiating power as a large ISP, some suspect that Comcast could leverage paid peering agreements to unfairly influence end-user connection speeds. Its ownership of both content production (in NBCUniversal) and content distribution (as an ISP) has raised antitrust concerns. These issues, in addition to others, led to Comcast being dubbed "The Worst Company in America" by ''The Consumerist'' in 2014 and 2010.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』