781-663-6322. (Waltham, MA)  This number with the ID of MCI called me today.  No message left.  When I called back, there was a message which said that this number is not in service.  Number has been blocked.

same here call twice today no message left

Two calls from this number in two days. First one was a message with a man singing only "highway to hell", then hung up. Next one no message.

Two calls from this number in two days. First day a message was left with man singing the words "highway to hell". Second call, no message. Glad to see I'm not the only one this [***] has called. Going to block the number.

Wonder what they're trying to scam--MCI is either the old long distance company (now part of Verizon I think), or it's Massachusetts Correctional Institution, in other words, one of the state prisons...