Nextdoor Holdings, Inc. is an American company that operates a hyperlocal social networking service for neighborhoods. The company was founded in 2008 and is based in San Francisco, California. Nextdoor launched in the United States in October 2011, and is available in 11 countries as of May 2023. Users of Nextdoor are required to submit their real names and addresses to the website. However, they do not verify the accuracy of submitted names and addresses.