Just received one. My cell phone started ringing and then it stopped after a few seconds. Googled it and it came up as a landline in Brooklyn assigned to MCI Worldcom.
+17182100307 called me on:
4/29/2012 at 2:27 pm
4/27/2012 at 2:09 pm
4/20/2012 at 12:10 pm
It rings less than twice and leaves no message.
According to http://www.mycallbot.com/numbers/7182100307
It belongs to
Central Office: NWYRCYZN06, NY - MCI WORLDCOM COMMUNICATIONS INC. - NY
According to wikipedia this company no longer exists
On July 13, 2000 MCI WorldCom renamed itself to simply "WorldCom"
On July 21, 2002, WorldCom filed for Chapter 11 bankruptcy protection in the largest such filing in United States history
On April 14, 2003, WorldCom changed its name to MCI
On Feb 14, 2005 Verizon acquired MCI for $4.8 billion in equity and $488 million in cash.
http://connectedplanetonline.com/finance/news/verizon_mci_acquisition/