Caller ID says AICR.
AICR is a scam charity. They call almost daily and they also call from a variety of numbers. Today I spoke with a rep and told him to put me on their do not call list. He was polite enough and claimed compliance.
However, my phone number is already on the Federal Do Not Call List. Charities are legally exempt from complying with the DNC, but why would any charity that wasn't a scam not respect the request for privacy of numbers on the list? A real charity would respect the list whether bound by the law or not. Therefore any charity which calls a number on the Federal DNC can be correctly classified as a scam.