1.1.1.1

1.1.1.1
Developer(s)Cloudflare
Initial releaseApril 1, 2018 (2018-04-01)
Stable release
Android: 6.38.2
iOS: 6.30.3
Linux: Varies per OS
macOS: 2025.2.664
Windows: 2025.2.664
PlatformAndroid, iOS, Linux, macOS, Windows
Websiteone.one.one.one

1.1.1.1 is a free Domain Name System (DNS) service by the American company Cloudflare in partnership with APNIC. The service functions as a recursive name server, providing domain name resolution for any host on the Internet. The service was announced on April 1, 2018. On November 11, 2018, Cloudflare announced a mobile application of their 1.1.1.1 service for Android and iOS. On September 25, 2019, Cloudflare released WARP, an upgraded version of their original 1.1.1.1 mobile application.