I also have Metro PCS. It appears someone has gotten Metro PCS's phone number list. So if you have Metro PCS, or have a number originally issued from Metro PCS, it will probably call you if it hasn't already.
I received this call on the morning of June 13, 2014. I let it go to voicemail. Playback was merely a snippet of Spanish. After perusing some of the other "Who's calling me?" and Number Reporter websites, here's what I've managed to find out:
1) It's a scam. They want you to input your phone number for some reason to be taken OFF the "do not call" list.
2) Some validators come back with this phone number "not valid"
3) This number is one in a block known for this kind of scam. Here are some of the other numbers to watch out for:
(213) 205-1233
(213) 205-6609
(213) 205-2200
(213) 205-1224
(213) 205-2235
(213) 205-4322
(213) 205-4434
4) A backtrace goes back to Arch Wireless in Los Angeles, CA, along with a central office switch #, which appears to be different each call.
5) All of this data strongly indicates this is a VOIP with a spoofed caller ID.
Scam. Block it and carry on with your life. Answering only makes it worse, because now they know you'll answer the phone.
Just got a call at 12:45 - heard one beep, then hangup... I've had this number for over 10 years with AT&T, don't know how it could have gotten connected with Metro PCS... Plus, my number is on the GOV "Do Not Call" list...