Thanks for this. I know the government's do-not-call list doesn't cover everything. You can opt out of a few others by going to iOptOut.ca. This is run by a university prof in Ottawa. I looks legit.

It's from a telemarketer service for Canada Family Action Coalition, the same one that uses 1-800-615-8658 for Rameses Shrine.  If you call the number back and listen to the message, you will be given a number to call to put yourself on their "Do Not Call" list. The number is 1-800-710-4154 for Canada Family Action and 1-800-470-5349 for Rameses. both numbers go to the same telemessage.  
The catch-22 seems to be that they promise you will not be called by an agency with which you have NOT had a previous business relationship.  So, if you have ever answered this number and made a donation, the "Do Not Call" list might be useless.

Maybe someone can help me with this number...?

I've no idea what it can be.