Numbers with this prefix were first introduced in 2012.While 2402249247 was originally issued with the info above, the owner of the phone number (240) 224-9247 may have transferred it through a process called porting.
Caller name: Cell Phone MD
Caller type: Telemarketer
This call comes in almost daily even though I ask to be put on a do not call list. Of course, since it is a recording, I doubt if I'm heard and I also don't listen to the whole recording, so there may be a specific way to opt out.