Who called from 4045267867

Keeps calling my office phone daily trying to solicit various services.
Today, it was the Atlanta Journal Constitution.

I received a call from that number just now on my office phone.  Fortunately, we have caller ID, so I didn't pick up.  I'm glad that I was able to look the number up through this service.

I also received a call from that number at work today but I didn't pick up. I've gotten calls from this number before and it's almost always been the AJC trying to sell me the paper.

Keeps calling me at home.

I had six missed calls on my office phone from this number from erly Friday morning through midday Saturday.  What can we do to block this number?