Local adult dating service phone numbers
While the billing is different, calls are usually routed the same way they are for a toll-free telephone number, being anywhere despite the area code used.
Other services include directory enquiries, weather forecasts, competitions and voting (especially relating to television shows).
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.
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.
Due to complaints from parent groups about kids not knowing the dangers and high cost of such calls, the FTC enacted new rules and such commercials ceased to air on television as of the mid-1990s.
Using 900 numbers for adult entertainment lines was a prevalent practice in the early years of the industry.