Hrm. There were definitely no routes for 129.134.31.0/24 from multiple route 
servers at around 14:00 UTC today, but I see that there are now routes for a 
containing /17 in AS 32934 now (20:25 UTC).

You can see the /24 disappear:

https://stat.ripe.net/widget/bgplay#w.resource=129.134.30.0/24&w.ignoreReannouncements=true&w.starttime=1633348800&w.endtime=1633363186&w.rrcs=0,1,2,5,6,7,10,11,13,14,15,16,18,20&w.instant=null&w.type=bgp

  -Rich

Rich Lafferty
[email protected] / 647-377-1165
Toronto, Canada
http://www.lafferty.ca


On Oct 4, 2021, 5:01 PM -0300, Peter Knapp <[email protected]>, wrote:
> I’ve seen this BGP withdrawal cited in a number of places.
>
> However we peer with FB, and all four sessions are up and have been live for 
> days/months (FB had maintenance on one peering router a couple of weeks ago) 
> and all 30 prefixes are consistent and announced.
>
> The NS IP’s are in the announcements, but you can’t ICMP to them, or query 
> them as NS for the auth records either..
>
> Peter Knapp
>
> From: Outages [mailto:[email protected]] On Behalf Of Rich Lafferty 
> via Outages
> Sent: 04 October 2021 17:27
> To: Outages mailing list <[email protected]>
> Subject: Re: [outages] Facebook.com no records?
>
> A carrier networking engineer friend of mine observed that the network that 
> those DNS servers live in is no longer in the global routing table. Sounds 
> like BGP issues rather than DNS ones, I guess. (I won’t admit to 
> understanding BGP.)
>
>   -Rich
>
> Rich Lafferty
> [email protected] / 647-377-1165
> Toronto, Canada
> http://www.lafferty.ca
>
>
> On Oct 4, 2021, 1:14 PM -0300, Jon Sands via Outages <[email protected]>, 
> wrote:
>
> > quote_type
> > Seems the facebook.com domain no longer has any DNS records? Getting
> > nxdomain from most clients, same when digging @ 1.1.1.1 8.8.8.8 etc
> >
> > https://toolbox.googleapps.com/apps/dig/#A/facebook.com
> >
> > --
> > Jon Sands
> > MFI Labs
> > https://fohdeesha.com/
> >
> > _______________________________________________
> > Outages mailing list
> > [email protected]
> > https://puck.nether.net/mailman/listinfo/outages
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