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!