Go ahead and block this number. It's phone solicitation for charities that do not actually exist. Scam. Fraud. Report the number to www.FtcComplaintAssistant.gov
Unfortunately I answered without looking at my call ID. A somewhat realistic computer called saying "he" was calling on behalf of a fund to help paralyzed first responders and asked if I would confirm my contribution of $100. I say it was a computer because of the delays between what "he" was asking and my answers. Obvious scam as it won't allow you to ask questions or respond in any manner not built into the computer's pre-programmed responses. Blocked now.