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|Headquarters||San Francisco, California, U.S|
|Industry||Internet information providers|
Alexa Web Search (discontinued 2008)|
|Parent||Amazon.com (acquired 1999)|
|Alexa rank||▲ 1,380 (October 2013[update])|
|Type of site||Web traffic and ranking|
Alexa is an Internet service that measures how many Internet users visit a website. At Alexa.com, people can enter a website address and Alexa will show them how well-visited the website is. It can also tell them how its popularity has changed over time. Alexa has 6 million unique visits monthly.
Alexa was created in 1996 by American businessman Brewster Kahle and Bruce Gilliat. In 1999, Alexa was bought by Amazon.com for about US$250 million in Amazon stock. Alexa provides free a api that is used by services and toolbars all around the world to easily display Alexa Rating.