I called back..."Phone is disconnected" WTF?

These people are "spoofing" the phone number.  One way this can be done is with a commercial phone switch where you can program any number you wish to display as the caller-id.  They will also use a dialer that just increments the phone number to the next number.  e.g. 123-555-1212 +1 -> 123-555-1213, +1 -> 123-555-1214, etc.  They don't bother with phone lists, they just keep incrementing the number and dialing until they get a hit.

this phone number rang while I was driving so I missed it.  No voice mail or anything.  Area code 201 is NJ... and I know nobody there and have no f**king clue who or what it is.

Recieved call at 7:00pm tonight, was an automated message trying to sell Health Insurance. When I selected option 2 to 'have my number removed from their calling list', line went dead. When I attempted to call back, recieved disconnected #. Reverse # search traced back to the New Jersey info listed above.

got a call from this number, they did not leave a message. so f#%$ them