[Outages-discussion] [outages] [External] Re: 4.2.2.2 down in LA area

[virendra rode]

On Wed, 2023-03-08 at 16:58 -0500, Jay Ashworth via Outages-discussion
wrote:
> Indeed, there are quite a number of publicly accessible - and
> publicly intended - customer resolver DNS servers not directly
> associated with access networks.
> 
> The six DNS resolvers in the former gte/bbn 4/8 Network are not
> intended as publicly accessible servers, and indeed <admin>are not a
> suitable topic for outage reports on this list</admin>.
> 
> Suitably vetted outage reports about such resolver servers which are
> intended for public use probably are. If you don't know what
> constitutes suitable vetting for such a report, you probably
> shouldn't make one. :-)
> 
> Who does 9/8 belong to these days, Patrick?
-----------------
IBM except for /24 which is quad9.

vrode at kernelpanic:~$ whois -h whois.cymru.com " -v 9.9.9.0/24"
AS | IP | BGP Prefix | CC | Registry | Allocated | AS Name
19281 | 9.9.9.0 | 9.9.9.0/24 | CH | arin | 2017-09-13 | QUAD9-AS-1, CH

/vrode
> 
> Cheers,
> --jra
> 
> On March 8, 2023 3:49:29 PM EST, "Patrick W. Gilmore via Outages-
> discussion" <outages-discussion at outages.org> wrote:
> > Quad-9!!
> > 
> > 9.9.9.9
> > 
> > -- 
> > TTFN,
> > patrick
> > 
> > > On Mar 8, 2023, at 15:45, Calvin E. via Outages-discussion
> > > <outages-discussion at outages.org> wrote:
> > > 
> > > Out of curiosity regarding non-Lumen customers using 4.2.2.2, why
> > > not use the intentionally public DNS like Cloudflare 1.1.1.1 and
> > > Google 8.8.8.8/8.8.4.4?
> > > 
> > > On Wed, Mar 8, 2023, 10:30 Hunter Fuller via Outages
> > > <outages at outages.org> wrote:
> > > > Additionally, configuring one DNS server is a bad idea. I’m not
> > > > sure if 4.2.2.2 is anycasted, but 4.2.2.1 through 4.2.2.6 exist
> > > > and all work, so if you are a Lumen customer and want to use
> > > > their resolvers, it’d be prudent to configure any two of
> > > > those. 
> > > > 
> > > > In other words, I mean this as gently as possible, but one of
> > > > six redundant servers going offline is not what I’d call an
> > > > “outage.”
> > > > 
> > > > On Wed, Mar 8, 2023 at 08:34 Mike Bolitho via Outages
> > > > <outages at outages.org> wrote:
> > > > > Speaking as a former Level 3 employee from way back. 4.2.2.2
> > > > > is NOT a polling server. So if you're using it for that, you
> > > > > should stop. Second, while it is publicly available for DNS,
> > > > > it is first and foremost a server for Level 3 customers. What
> > > > > they do with it and how available it is outside the network
> > > > > is not guaranteed. YMMV.
> > > > > 
> > > > > - Mike Bolitho
> > > > > 
> > > > > On Wed, Mar 8, 2023, 3:03 AM Michael B. Williams via Outages
> > > > > <outages at outages.org> wrote:
> > > > > > Hi Team - I have been seeing issues as well since
> > > > > > approximately 19 December 2022.
> > > > > > _______________________________________________
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> > > > -- 
> > > > 
> > > > --
> > > > Hunter Fuller (they)
> > > > Router Jockey
> > > > VBH M-1C
> > > > +1 256 824 5331
> > > > 
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