<Li> HBO Original Productions </Li> <Tr> <Th> Website </Th> <Td> homeboxoffice.com </Td> </Tr> <P> Home Box Office (HBO) is an American premium cable and satellite television network that is owned by the namesake unit Home Box Office, Inc., which in turn is a subsidiary of AT&T through its WarnerMedia unit . Programming featured on the network consists primarily of theatrically released motion pictures and original television series, along with made - for - cable movies and documentaries, boxing matches, and occasional comedy and concert specials . </P> <P> HBO is the oldest and longest continuously operating pay television service (basic or premium) in the United States, having been in operation since November 8, 1972 . In 2016, HBO had an adjusted operating income of US $1.93 billion, compared to the US $1.88 billion it accrued in 2015 . HBO has 49 million subscribers in the United States and 130 million worldwide as of 2016 . The network provides seven 24 - hour multiplex channels, including HBO Comedy, HBO Latino, HBO Signature, and HBO Family . It launched the streaming service HBO Now in April 2015 and has over 2 million subscribers in the United States as of February 2017 . </P>

What does *h* stand for in american premium cable and satellite television network *hbo*