I have been getting a call from 520-000-000000 too. I have not answered it and they do not leave a voice message. They have called me twice this week. I am getting really annoyed by it. I wish I knew why this is happening.
520000000000 is a hidden mathematical equation by the great scientist Julian Abelgard. You will not find any info about him or his work. This is highly classified, secret society stuff. If you have been contated by this number, you have been chosen. Stand by for further details. etsamaN.
Fascinating! The number from hell. I did get a call from it about 40 minutes ago. Never take a call not stored in your phonebook. However being of a curios nature, I called them back with no positive results.
It is possible these are wrongly dialed international calls.