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https://web.archive.org/web/20231011023311/https:/blog.cloudflare.com/1-1-1-1-lookup-failures-on-october-4th-2023

1.1.1.1 lookup failures on October 4th, 2023

On 4 October 2023, Cloudflare experienced DNS resolution problems. Some users may have received SERVFAIL DNS responses to valid queries. In this blog, we’re going to talk about what the failure was, why it occurred, and what we’re doing to make sure this doesn’t happen again



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1.1.1.1 lookup failures on October 4th, 2023

https://web.archive.org/web/20231011023311/https:/blog.cloudflare.com/1-1-1-1-lookup-failures-on-october-4th-2023

On 4 October 2023, Cloudflare experienced DNS resolution problems. Some users may have received SERVFAIL DNS responses to valid queries. In this blog, we’re going to talk about what the failure was, why it occurred, and what we’re doing to make sure this doesn’t happen again



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https://web.archive.org/web/20231011023311/https:/blog.cloudflare.com/1-1-1-1-lookup-failures-on-october-4th-2023

1.1.1.1 lookup failures on October 4th, 2023

On 4 October 2023, Cloudflare experienced DNS resolution problems. Some users may have received SERVFAIL DNS responses to valid queries. In this blog, we’re going to talk about what the failure was, why it occurred, and what we’re doing to make sure this doesn’t happen again

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