I spoke to the rep and asked if he worked for ADP. He paused, then answered he was affiliated with ADP. Then I asked in what way. He replied "We're an affiliate" but would never give me the name of the affiliate or whether ADP owned them.
I work for ADP, when you receive a call from this number it is either 1. because you contacted ADP in some way, shape or form (i.e. called 800-CALL-ADP or went to our website for more information, went to a trade-show and asked for more information, went onto our website because you were having trouble with your pay stub, etc.) or 2. your sales rep is calling (i.e. to ask how everything's going, to see how a set-up went with a new solution you received, etc.)
I got a call from 484-201-2950 and a Workers Compensation rep told me about an ADP solution that saved me $10,000 on my workers compensation insurance. Call me any time.