IP Address info

I was working on a project for a college class in which I was keeping a database of the IP addresses of individual visitors, but my program wiped out all that info and I will lose at least one letter grade on the project if I don't have the database, I know the cities from which all the visitors were from so I need someone who can compile a list of IP addresses to match to the cities- I need IP addresses from as many ISP's as possible- comcast, bellsouth, roadrunner, charter, earthlink, verizon, etc. I know that many of you computer specialists are familiar with the IP address ranges of all these individual providers and can put together an ip sequence for them that is for a particular city (some of the cities my visitors were from are- Atlanta, Los Angeles, Boise (Idaho), Houston (TX), etc. so is there anyone who can simply create a list of IP addresses that will match to specific cities?