The number is tied to a company in New York called "International Asset Recovery." However, the business discription (on YP.com) describes Hill International, "...one of the leading construction management companies in the world." It lists several telephone numbers, including the one.
Since there appears to be a legitimate business tied to this number, I might give them a call tomorrow at one of the other numbers. If it's a collection agency, I need to get my number off of their records (I keep getting calls for someone unknown with my last name).