Mock sample for your project: OpenAQ API

Positioning API accepts requests with radio network measurements and replies with corresponding location estimate. For more details and examples, see Developer's Guide. Cellular measurements are given in terms defined in 3GPP and 3GGP2 specifications, see the corresponsing documentation at http://www.3gpp.org.
Breaking changes from v1:
JSON fields
altaccuracy, baselat, baselng, cellparams, pilotpower, pnoffset, powrx, rxlevel,
have been deprecated and replaced with
altAccuracy, baseLat, baseLng, cellParams, pilotPower, pnOffset, rss, rxLevel
respectively.
Dependent parameters combined as a subobject.
CDMA, GSM, WCDMA, TD-SCDMA and LTE local identification parameters for serving cell moved under localId property.
GSM neighbor global ID: lac and cid for neighbor cell moved under globalIdentity property.

Worldwide forward and reverse geocoding

IP2Proxy allows instant detection of anonymous proxy, VPN, TOR exit nodes, search engine robots (SES), data center ranges (PX2-PX10), residential proxies (PX10) and VPN provider name (PX11) by IP address. It also returns the threat type of the proxy (PX9 or higher). Visit https://www.ip2location.com/web-service/ip2proxy for further information.

Access the most exhaustive, accurate and up-to-date collection of global and hyper-local geocoded events and activities across a wide range of categories and genres

Abstract IP geolocation API allows developers to retrieve the region, country and city behind any IP worldwide. The API covers the geolocation of IPv4 and IPv6 addresses in 180+ countries worldwide. Extra information can be retrieved like the currency, flag or language associated to an IP.

The TrapStreet API finds trap streets in Google Maps, Bing Maps and OpenStreetMap data.

Open Source GPS Tracking Platform

Since 2006, Gisgraphy is a free, open source framework that offers the possibility to do geolocalisation and geocoding via Java APIs or REST webservices. Because geocoding is nothing without data, it provides an easy to use importer that will automatically download and import the necessary (free) data to your local database (OpenStreetMap, Geonames and Quattroshapes: more than 100 million entries). You can also add your own data with the Web interface or the importer connectors provided. Gisgraphy is production ready, and has been designed to be scalable(load balanced), performant and used in other languages than just java : results can be output in XML, JSON, PHP, Python, Ruby, YAML, GeoRSS, and Atom. One of the most popular GPS tracking System (OpenGTS) also includes a Gisgraphy client...Gisgraphy is a framework. As a result it's flexible and powerful enough to be used in a lot of different use cases. read more
if you use the premium servers, you can use the api key to test the webservices

API to view feed information and download feeds from TransitFeeds.com

Global marine weather data from multiple sources in one single API with hourly resolution. Get your API key by visiting the Storm Glass web site.

The Google My Business API provides an interface for managing business location information on Google.

Before using this API, we recommend you read our Authorization Guide for more information on how to generate an access token.
Please also be aware that our test environment is based on a subset of the production, if you are not returning any results try with big cities/airports like LON (London) or NYC (New-York).