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October 30, 2020 12:00PM

Unwrap the SERVFAIL

DNS Resolver

We recently released a new version of Cloudflare Resolver, which adds a piece of information called “Extended DNS Errors” (EDE) along with the response code under certain circumstances. This will be helpful in tracing DNS resolution errors and figure out what went wrong behind the scenes....

October 02, 2020 8:35AM

DNS Flag Day 2020

DNS Reliability

October 1 is DNS Flag Day, an initiative by the DNS community to make DNS more secure, reliable and robust. This year the focus is on problems around IP fragmentation of DNS packets....

September 15, 2020 12:00PM

Secondary DNS - Deep Dive

DNS Speed Reliability Growth Kubernetes

The goal of Cloudflare operated Secondary DNS is to allow our customers with custom DNS solutions, be it on-premise or some other DNS provider, to be able to take advantage of Cloudflare's DNS performance and more recently, through Secondary Override, our proxying and security capabilities too....

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