Got a call from this number, Ridgetop research.  Doing research that is within my field.  Can't find any info about the company

Got a call from this number too. The person left a message saying he was with ridgetop research and would like to discuss an opportunity. Any idea if this is a recruiting company?

I received a call from this number too.  I do not see a robust website describing their business and, therefore, will not call back