Announcing the Results of the 1.1.1.1 Public DNS Resolver Privacy Examination

On April 1, 2018, Cloudflare launched its public DNS resolver, 1.1.1.1, with a focus on privacy and security. The company committed not to retain any personal data about requests made using the resolver and implemented technical measures for DNS over HTTPS to keep queries secure. To prove their commitment to privacy, Cloudflare engaged an independent accounting firm to examine its 1.1.1.1 resolver privacy commitments. The examination process provided valuable lessons on privacy by design principles and the importance of clear communication about data handling practices. As a result, Cloudflare refined its commitments to ensure that it does not track individual users' online activities or retain their source IP addresses in non-volatile storage. The company encourages other providers to adopt similar data handling practices for improved privacy and transparency for Internet users globally.