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.dev

Internet top-level domain for software developers

.dev is a top-level domain name operated by Google Registry. It was proposed in ICANN's new generic top-level domain (gTLD) program, and became available to the general public on March 1, 2019, with an early access period that began on February 19.

01Security

The .dev top-level domain is incorporated on the HSTS preload list, requiring HTTPS on all .dev domains without individual HSTS enlistment.

02History

Prior to Google's addition of the .dev TLD to the HSTS preload list, it was common for web developers to create ad hoc addresses ending in .dev on their local networks for testing purposes. These local addresses would be created using either fake DNS servers or their own computer's hosts file and would not be accessible to the wider internet. However, after .dev was added to the HSTS preload list, most modern web browsers began refusing to load .dev websites unless they were served over secure HTTPS connections, thereby causing most of these local testing environments to stop functioning.

Watch videos about .devExplainers and documentaries on YouTube (opens in a new tab)

Sources and credits

This article is adapted from the Wikipedia article .dev, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.

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