2,000 blocked numbers is at https://www.amazon.com/dp/B074VVKPPN/ref=psdc_172612_t4_B0191XMBV2
As to the question, I found no document on this. Time to ask Panasonic directly.
I have a KX-TGF575s. I have had it for at least 6 months, and it has reached the 250 call blocking limit. My first question is relating to the blocking of a range of numbers feature, where it says that you must enter at least 2 digits. Are you supposed to enter in the 1, as in 1-800, and thus the two digits would be 18?, or if you want to block any 800 #, would it be 80, or 88, or what?
Besides Panasonic, any other call blocking phones, with room for more than 250 blocked numbers, that are recommended?

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