They could purchase sales records from online retailers. Hey guys, give us the IP address, city, state and zip code for each sale; we'll pay you a nickle each. Then correlate that with BGP announcements that show the range of impacted addresses.
After looking more into the geo ip topic, I totally noticed, geo data should NOT correlate with BGP data at all! There are a couple of geo ip services that are doing it like you described, but IMO it's wrong. See big telco's announcing /12's and having these IPs spread all over the country. On 25.09.2015 at 03:51 William Herrin wrote:
On Thu, Sep 24, 2015 at 9:45 PM, Ray Van Dolson <rvandolson@esri.com> wrote:
I assumed it must be based off of WHOIS. The IP space I'm working with is in the midwest (US). The address associated with it is from our primary IP block out here in California, which it would have only been able to gather from WHOIS. If it had gone off the last hop, presumably it would have seen that as something a little closer to the real location rather than *exactly* where our primary environment is. :)
They could also do RDNS lookups and then see what rwhois says about the domain.
They could purchase sales records from online retailers. Hey guys, give us the IP address, city, state and zip code for each sale; we'll pay you a nickle each. Then correlate that with BGP announcements that show the range of impacted addresses.
They could convince folks to install web browser plugins which give the users rewards in exchange for ceding personal information. Or buy data from a company which does.
-Bill