Every cloud data center has a geographical location, which is known to, at least, its owner. Still, it is a challenge for a cloud customer to discover indisputably the location of the data center, which hosts an active cloud based service and its data. Knowing the location is necessary to assess that pertinent geographical obligations of service level agreements and legal requirements are fulfilled. For example, several countries have legislation that denies processing private data of its citizens in countries that do not have compliant legislation. This paper presents existing technologies that can be used to resolve and assess the geographical location of a cloud servers.