Premium rate, premium service, or 900 numbers. Whichever way you slice it, they are where billable services like adult chat lines, tarot reading, and special services, including tech support, are offered for a price, a very hefty one too.

Back in the 80s and 90s, 900 numbers generated huge profits for companies and people. Some still exist, but for the most part, billable offerings are offered on 800 numbers and are billed to a card, not your phone, with some exceptions.

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