Yep. It's a computer auto-dialer that only wants a "live voice" to answer (it can be programed to do that) so if you have a machine screen your calls, it hangs up. I just received 2 calls within 5 minutes, and did *69 to get the number (206) 543-5045. After getting nowhere on reverse phone lookup (unlisted, and need to pay $39.00 for more info) I decided to just paste the phone number in my web browser and found this site.
Don't bother following up on this one. You won't get anyone.
I get calls from this 206543xxxx (7657,5305etc) all the time n never lv vmail or anything too...i once answered n it was fr uw alum ...now i don't answer this number but i keep getting calls...do annoyed