Adult chat lines (phone sex) and tech support are a very common use of premium-rate numbers.Other services include directory enquiries, weather forecasts, competitions and voting (especially relating to television shows).
In 1992, the Supreme Court allowed a law passed by Congress that created a block on all 900 numbers that provided adult content, except for those consumers who requested access to a specific number in writing.
The law killed the adult 900 number business, which moved over to 800 numbers, where billing had to be done by credit card.
Diplomatic services, such as the US Embassy in London or the UK Embassy in Washington, have also charged premium rates for calls from the general public.
In many European countries, for example France, Germany and the United Kingdom, it was common for organisations to operate customer service lines on premium-rate numbers using prefixes that fall outside the scope of the country's premium-rate number regulations.
Telephone companies typically offer blocking services to allow telephone customers to prevent access to these number ranges from their telephones.
In some jurisdictions, telephone companies are required by law to offer such blocking.
This type of scam was especially popular in the late '80s to early '90s in the United States before tougher regulations on the 900 number business forced many of these businesses to close.
A 1-900 telephone number, in the North American Numbering Plan, has the form 1-900-###-####, and is often called a 900 number or a 1-900 number ("one-nine-hundred").
Initially, consumers had no choice regarding the accessibility to 900/976 numbers on their phones.
However, in 1987, after a child had accumulated a bill of ,000 From the early 1980s through the early 1990s, it was common to see commercials promoting 1-900 numbers to children featuring such things as characters famous from Saturday morning cartoons to Santa Claus.
Area Code 900 went into service January 1, 1971, but the first known to have been used in the United States for the "Ask President Carter" program in March 1977, for incoming calls to a nationwide talk radio broadcast featuring the newly elected President Jimmy Carter, hosted by anchorman Walter Cronkite.