Got a call at 19:01 PDT yesterday from this number, with callerID of "DonorDirect".
From Internet research, this seems to be a company that does fund-raising for various nonprofit agencies.

Of course, they either inflate the amount they raise, to pay themselves after paying the agency as contracted, or take an up-front amount.  So, the agency gets less than what is fund-raised.  If you're going to give, give directly to the agency, so that they get 100% of your gift.

When they called me today, it certainly sounded like a well-rehearsed, professional solicitor type voice. That alone made me suspicious.  When he identified the Red Cross as the organization that he was  fund raising for  I still wasn't convinced as they had recently sent out their donation requests by mail and I had received mine. So why would they be calling as well as soliciting by mail.  I just said no thanks and then checked the number here.
Thanks for the heads up.

my husband kept receiving calls here, they also wanted donation from Red Cross, I am not sure what they are all about though... they were not sure if they could send me electronic receipt etc.

They keep calling my house and cell, I say hello and they hang up

I just received a call from this number and they identified themselves as soliciting from Red Cross.  They had my donation information from back in 2009, but to be safe, I told them I would make donations to the Red Cross when I am ready.  Still not sure if this is legit.