Where are you based? I can check if this can be replicated in our backbone, in case we have a PoP close.
On Sep. 6 2019, at 11:17 pm, Nick Hilliard <n...@foobar.org> wrote: > Nick Hilliard wrote on 06/09/2019 21:19: > > Chip Marshall via NANOG wrote on 06/09/2019 20:11: > > > Hello, I'm seeing an oddity when doing DNS lookups for www.google.com > > > from our > > > London datacenter, and I'm curious if other people are seeing the same > > > behavior. > > > > > > I saw a bunch of monitoring systems queries for www.google.com/A return > > back with no A records at ~20:35 BST. It's returned back to normal now, > > but we needed to flush a bunch of DNS caches. > > > ... aaaand there we go again at 22:07 BST. > Nick
