Definitely the same group. Corporate Acquisitions from Colorado. They use GotVMail.com which provides local numbers around the country. Makes them look like they are from Western Mass. Call the number and you will get a voice message and a long list of voice mail boxes for all the people at Corporate Acquisitions.
Our small insurance agency got an after hours message (6:53 pm on a Thursday) from this number. The message identified the caller as Rick Weber of Corporate Acquisitions Group, Chicago. Said he had buyers for my type of business in my area. Really sounds suspicious to me.
8:41 PM call left on answering machine from Rick Weber Corporate Acquistion Group, Chicago, IL same message as reported by other business people contacted googled Corporate Acquistion Group, Chicago, IL and got this site
yet another scam apparently