The most widely used technique for IP geolocation consists in building a database to keep the mapping between IP blocks and a geographic location. Our work sheds light on a novel light-weight and self-contained user geolocation solution. Our experiments demonstrate that cache-based geolocation can achieve at least accurate country-level granularity in the regions where CDN edge servers are densely deployed. To evaluate the usability and accuracy of the cache-based user geolocation, we conducted practical experiments based on a commercial VPN with over 160 endpoints distributed in 94 countries. As a result, a website can infer coarse-grained user location by asking a user to send an HTTP request to an arbitrary domain that is known being served by a CDN, and inspecting the corresponding responses. Many of these edge servers are assigned with unique identifiers that are tied to their location, which can be easily retrieved by inspecting HTTP responses headers served by these edge servers. This work is motivated by the fact that CDN providers deploy a number of edge servers that are geographically distributed across the world. In this paper, we propose a novel approach, namely CacheLoc, for coarse-grained user geolocation leveraging widely-deployed content delivery networks (CDNs). However, besides Internet giants such as Google, who retains a large amount of detailed user information, most websites still rely on IP addresses for user geolocation, which is proven inaccurate and misleading by existing studies. In nowadays’ Internet, websites rely more and more on obtaining users’ geolocation to provide customized services. To improve the accuracy of IP georeferencing, the authors proposed an ensemble method for averaging coordinates obtained from several IP geoservices. Based on the comparative analysis of the test results, conclusions about the accuracy of IP-geolocation services according to the selected indicators, their essential properties, as well as the dependence of geolocation error on the size of the settlement were made. During the study, the results of IP-geolocation were compared with reliable information about the location of some IP addresses, as indicators of accuracy country, city and geographic coordinates were used. The sample of IP-geoservices for testing was formed from the most popular ones. The object of this study is the public IP-geoservices that provide geolocating services for nodes in the global network based on their IP addresses, and specifically, their accuracy and completeness. For the same input data, the results of different IP-geoservices can vary significantly. IP geolocating error depends on the country, population density, type of network device and ranges from several tens of meters to hundreds of kilometers. There are different methods for determining the location of a remote network device, which differ both in type of analyzed information (delay packet transmission, resource records DNS-servers, the content of Web pages), and the result (country or city name, mail address, probable area of location or exact coordinates). Currently, it has found wide application in Internet commerce, marketing and advertising, information security, and other areas of human activity. IP geolocation is the process of determining the real geographic location of an electronic device connected to the Internet, by its global network address. In this paper we will look at applications and methodologies (both traditional and more recent) for IP Geolocation. The ability to determine the exact location of a person connecting over the Internet can not only lead to innovative location based services but it can also dramatically optimise the shipment of data from end to end.
If the user consents then the service can view your ISP's logs and track you as accurately as possible. In some countries laws are in place that state a service can only track you as far as your country without your consent. This method of tracking can have very broad results and can sometimes only get an accurate result with some input from the user about their location. The IP address of a device is unique to that device and as such the location can be narrowed down from the continent to the country and even to the street address of the device. This can have many potential benefits for business and other types of application. IP Geolocation allows us to assign a geographical location to an IP address allowing us to build up a picture of the person behind that IP address.
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