Also, based on the accent, the callers are working from centers in India.

These scumbags call themselves Domain Registry Customer Service.  They're trying to trick you into switching over your domain name to them... probably for outrageous annual fees.

They obtain your phone number from the contact information in the publicly viewable domain name registry.

got a call today july 25 from ? they asked to talk to me (mike) used only first name But they were muffeled like they were trying to protect what they really sound like I of course hung up!

got a call from this number on 7/17/08, no message and dont know who it is, Google says it's a Texas exchange