Spur Context Lookup is a free Chrome extension developed by Spur Intelligence. It falls under the category of Browsers and is specifically classified as an Add-ons & Tools subcategory.

This extension brings the power of Spur's world-class proxy and VPN detection to your Chrome browsing sessions. With the Spur Context API, you can enrich both IPv4 and v6 addresses on any page.

To use the extension, simply right-click on the extension icon and select "options" to input your Spur API token. Once that is done, you can highlight an IP address and use the shortcut Ctrl+Shift+F to enrich the information. Alternatively, you can click the extension icon while an IP address is highlighted. Please note that the keyboard shortcut can be modified in Chrome's Extension settings.

Please keep in mind that a valid Spur Context API Key is required for use. You can find more information about acquiring the API key on Spur's website.