nanog mailing list archives

Re: Curious Cloudflare DNS behavior


From: Mark Milhollan <mlm+nanog-lists () milhollan com>
Date: Sat, 30 May 2020 10:54:58 -0700 (PDT)

On Fri, 29 May 2020, John Sage wrote:

Each one of ping, traceroute, dig and host returns

Host usbank . com not found: 2(SERVFAIL)

Could be a DNSSEC issue. When it happens check <http://dnsviz.net/> or <https://dnssec-debugger.verisignlabs.com/> to see if that's the case.

--
Mark Milhollan
+1-805-901-4009


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