At that time, the intent for area code 900 was as a choke exchange—a code that blocked large numbers of simultaneous callers from jamming up the long distance network.Numbers with the 900 area code were those which were expected to have a huge number of potential callers, and the 900 area code was screened at the local level to allow only a certain number of the callers in each area to access the nationwide long distance network for reaching the destination number.The EU Consumer Rights Directive 2011/EU/83 came into force on 13 June 2014. Implementation detail, and hence the level of success in achieving this aim, varies considerably from country to country.
These numbers were dialed as any other number, such as 976-1234.
A call to either one of these numbers can result in a high per-minute or per-call charge.
These telephone numbers are usually allocated from a national telephone numbering plan in such a way that they are easily distinguished from other numbers.
Telephone companies typically offer blocking services to allow telephone customers to prevent access to these number ranges from their telephones.
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").
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.In some jurisdictions, telephone companies are required by law to offer such blocking.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).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.While you’re waiting you can still use other parts of the Childline website and get support from the message boards or Ask Sam.