Who called from 4420811800

Missed call with no message, there is 48 at the end of the number

Called me twice, no answer either machine or human when I picked up.
I called the number back and the phone company recording says "number not in service" so I suspect a spoofed caller ID number.

Received a cell phone call at 4:00 am; rang once, they hung up.

it's from: http://evaphone.com/