They are actually calling on behalf of Dunn and Bradstreet. Third party info checkers. A bit annoying. I contacted DB about their service and unfortunately now I'm on their call list. That's how they generate revenue. They compile a database on Company's.  

My company has been constantly contacted through this number, claiming that they are from D&B, and demanding to know information about our company. They also had another man call me from a different number, immediately demanding information, and then tried to claim he was from D&B upon being questioned. I've contacted the legitimate Duns & Bradstreet company and they have no record of these men nor these numbers. They are NOT from D&B!

This really is D&B - it's their verification team for verifying phone numbers. If they are calling you and you are not the business owner, you should just tell them that, and they will most likely reject the phone number change in their records and stop calling you.

Got a call this morning, requested a return phone number, they couldn't give me one.

They keep calling and stating they are from D&B.....I think they are a scam

I had several lost calls, they rush leaving the message, they call from the number above and claim to be from D&B , but leave a different number for callback, plus a random reference number.

They claim to be from D&B (duns and bradstreet) they want to talk to our manager about our company profile. They always leave a message and refer it to a case #.
I don't believe they are from D&B, they sound like gum shoes or debt collectors !!
I am calling D&B tomorrow and report them this number. Someone is using their name illegally .