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These databases typically contain IP address data, which may be used in firewalls, ad servers, routing, mail systems, websites, and other automated systems where a geolocation may be useful. An alternative to hosting and querying a database is to obtain the country code for a given IP address through a DNSBL-style lookup from a remote server.
Allows you to find coordinates with a place name search. Licensing: Geonet Names Server (GNS) Name search: U.S. National Geospatial-Intelligence Agency (NGA) maintains a comprehensive database of non-U.S. place data. The Libre Map Project: The purpose of the project is to aggregate and make digital maps and related GIS data available for free.
Beyond names of places in various languages, data stored include latitude, longitude, elevation, population, administrative subdivision and postal codes. All coordinates use the World Geodetic System 1984 . Those data are accessible free of charge through a number of Web services and a daily database export. [4]
The Open Location Code (OLC) is a geocode based on a system of regular grids for identifying an area anywhere on the Earth. [1] It was developed at Google's Zürich engineering office, [2] and released late October 2014. [3] Location codes created by the OLC system are referred to as "plus codes".
Address geocoding, or simply geocoding, is the process of taking a text-based description of a location, such as an address or the name of a place, and returning geographic coordinates, frequently latitude/longitude pair, to identify a location on the Earth's surface. [1]
These maps cover the world, but may have close up details in many areas. Apple. Apple Maps; Esri; Fosm.org; Alphabet. Google Maps; Google Earth; Waze; Here. Here WeGo
Reverse geocoding is the process of converting a location as described by geographic coordinates (latitude, longitude) to a human-readable address or place name. It is the opposite of forward geocoding (often referred to as address geocoding or simply "geocoding"), hence the term reverse.
Example: Firefox's Geolocation implementation [12] uses Google's network location provider. [5] Google Gears Geolocation works by sending a set of parameters that could give a hint as to where the user's physical location is to a network location provider server, which is by default the one provided by Google (code.l.google.com). [13]
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