PrimeTel Communications is a telecommunications company in Philadelphia, Pennsylvania, nominally a service provider for toll-free telephone numbers. Founded in 1995, it is known for amassing large amounts of 800 numbers to redirect misdialed phone calls to erotic chat lines operated by National A-1, an affiliated company. PrimeTel acquires numbers that were previously registered and advertised, resulting in embarrassment when they advertise erotic chat lines. The company controls 1.7 million 800 numbers, as well as millions of numbers on other prefixes.