Who called from 2158000000

No country code on this, but it can't be 215 as that's not allocated... not unusual for it not to come through. All I got was a ping and "Goodbye".

the 215 800 is Pennsylvainia

@ 1328 GMT I got a call from this number. A guy saying he was from 'Household Habits'.  He wanted to ask me a few questions that 'would be very quick'.  When I asked who he got my number from he hung up.

i just got a call as well from this number not knowing whom it was and said hello and they hung up.

I got this today.  There was quite a lot of background noise as if there were a lot of people in the room and the guy said he was calling from household habits and wanted to  do a short survey.  As everyone else has found, as soon as I asked where he got my number he hung up.