ARIN NetHandles and CIDRs
I’ve been playing with the idea of getting the nethandles from ARIN to be able to associate the smaller CIDR ranges with the City, State and maybe even the Zip Code for IP addresses and for the most part I’ve done it. I’ve got an automated process that is gathering data for the nethandles and caching then for about a week, so that I don’t hit the ARIN Whois servers too much. (I’m tyring to be nice here guys) With the nethandles I have a much finer precision then I have been using in the past. In some cases the ranges are as small as 8 IPs in the range. I’m hoping that this will be the basis of the IP location part of the IP database getting the information to atleast the region, if not the city level for every IP address inside the US (and most likely Canada too) and I’m shooting for 90%+ accuracy.
