Just a WAG, but I’m guessing it is just a dummy database filled with fake names, addresses, and phone numbers to illustrate or, perhaps, to debug some open-source software project. There are only 9 states included (and, as far as I see, only one area code in each of those states).
At the bottom of a listings page you see
The BSD-style license seems to be some kind of free-software license.
I ran across it once when I got a spam phone call from a number I did not recognize. I ran it through Google and the Hodges directory came up, identifying the number with a name and address. Thing is, the address was for a (I believe) a Social Security office and I could find nobody in the state with the name they had listed (well, not the way it was spelled in the directory. The name listed was something like Eddy Newcombe and the closest I could find was an Eddie Newcomb, or something like that).
So, I don’t know what it is about, so that is why I’m guessing it is a dummy database, like those you find in Access tutorials (what is it, Northwind Traders?). Maybe it is used to spoof caller ID numbers for spammers?