What does it mean when I receive a 000000000000 call?

What is RCA Victor TV model 21-S-548 worth? How card you get a fishing access pass for free? How would you limit Google to search for the meaning of life on wikianswerscom site? Where is the treasure on rock isle? On a mobile phone how do you go to the PC version of a website built for PCs and phones like YouTube? Which country has this telephone number 00 256 78? What is a search log? Who played Quincy in the TV series Quincy? Can green poison jailbreak iPhone 3G on 4 2 1? Is keepersport a safe website? What is Google Calendar's environment and boundary? Is there a way to stop group texts? Are there any charateristics or specific ways to tell if you are underweight? How can you get a code for dizzler on a mobile phone in the UK? Where is the best place to sell old cell phones? Can you show the wildtangent unlock code for mystery of mortlake mansion? What is the purpose of the caller in square dancing? What is the use of a finally clause? Why shouldn't violent television shows be banned? Why does bathtub spout make a tea kettle whistle when shower diverter is pulled up?