We have been using Maxmind's open source data set [0] on RIPEstat [1] now for quite a while and there have been quite many user complaints about the correctness of the location or the recency of the data.
One reason can be that [0] is updated/released only once a month, usually beginning of the month. In some cases the Maxmind's online preview [2] - assuming the underlying data is the paid version - seemed to be more up-to-date. Getting BGP topology to geographical location right is not a trivial task for various reasons of which some were already stated here. From my experience with Maxmind I think that the RIR's Whois information is a starting point to bootstrap their database and from there Maxmind uses ping/traceroute triangulation, change requests... and keep in mind that Maxmind's main business field is e-commerce which allows them to correlate requests (IPs from customers) from e-shop site (with known geographical affiliation). Since many ISPs seem to suffer from misguided geo-ip information provided by different providers it would be a huge improvement to have at least one data set that allows the ISPs to provide location information to the IP space they own. Few years ago I heard of a project called OpenGeoFeed [3] but I don't know about its status. Christian [0] http://dev.maxmind.com/geoip/legacy/geolite/ [1] e.g. https://stat.ripe.net/widget/geoloc#w.resource=2001%3A67c%3A2e8%3A%3A%2F48 [2] https://www.maxmind.com/en/geoip-demo [3] https://www.opengeofeed.org/ On 25/09/15 03:48, Ian Clark wrote: > Is there anyone here who has successfully changed their GeoIP data for a > subset of their ARIN allocation? > How do service providers get all the GeoIP companies to have correct > information for their address ranges? Do they just pay them to update it? > At first I thought it had to do with whois data, but my home Verizon IP > whois lists Ashburn, VA, yet the GeoIP data shows my local city. > > We're trying to find a way to correct our GeoIP data for a specific IP > range, but aren't sure what the best practices are for doing so. Any > advice would be awesome! >