This number is OK; It is from Apex Technical Recruiters; probably got your number off monster.com. https://www.linkedin.com/in/cwalton09 Several Recruiters use this number
Putting up a LinkedIn page to someone does make validate the company as we have seen many fake pages over there. You knew who the company was and you came here anyway searching for this number. Why? Normal people don't do that when they know who is calling. It seems odd that this company claims 60+ years of experience but was only formed in 1995, so there seems to be a bit of mathematical error there. It also seems odd that they have nothing better to do than to troll resumes. You need to be more convincing to get us to believe that this was a legitimate call.