I have several names (first + last in combination) that are fairly common in the US, but I want to know how widely geographically dispersed they are. So, for example, I can search at http://names.whitepages.com/ for "Michael Jackson," and can see that there are 9,364 phonebook listings for that name across the country. But what I want to know is-- how many different phonebooks contain at least one listing for the name "Michael Jackson"? Whitepages.com only seems to break it out by state, whereas I want to know about local phone directories. Is there a way to figure this out without going through each listing by hand and examining the address data?