The ‘Regions’ dimension reports the geographic region of the visitor. It is a geographic area that is smaller than a country but larger than a city. In some countries, a region is a state, province, or prefecture. In other areas, it is a constituent country, department, or metropolitan region. Using this dimension is valuable if you want insight more granular than Countries but not as granular as Cities.
This dimension references lookup rules internal to Adobe. The lookup value is based on the IP address sent with the hit. Adobe partners with Digital Element to maintain lookups between IP address and country. This dimension works out of the box for all implementations.
Dimension items include regions and the country that the region resides in. Example values include
"California (United States)",
"Tokyo (Japan)", or
"Sao Paulo (Brazil)".
Some dimension items can include
"AOL", a dial-up internet service provider. Subscribers to this service are assigned an access point based on the country where their account number is established. AOL users use the IP address of this access point. Since this dimension is based on IP address, the geolocation of the access point is used instead of the visitor’s actual location.
Since this dimension is based on IP address, some scenarios can show a difference between reported location and actual location: