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Google served from non-google IPs?



Seems like an odd waste of resources; what if Google, Akamai, Netflix, and
anyone else who wanted caches wanted IPs in that block? The IX would be out
of address space pretty quickly, forcing a majority of users to re-number
because of a small number of other users.

-Dave

On Thu, Mar 12, 2015 at 1:07 PM, Steven Schecter <schecter at gmail.com> wrote:

> Those IPs appear to be used by to Google cache servers at the QIX.  It's
> common for CDNs to utilize provider space and not maintain their own
> layer-3.  E.g. cache servers connected to switch, connected to provider,
> without the requirement of a router.
>
>
> /Steve
>
> On Thu, Mar 12, 2015 at 3:58 PM, Jason Lixfeld <jason at lixfeld.ca> wrote:
>
> > So today, I saw this:
> >
> > BlackBox:~ jlixfeld$ host google.ca 8.8.8.8
> > Using domain server:
> > Name: 8.8.8.8
> > Address: 8.8.8.8#53
> > Aliases:
> >
> > google.ca has address 206.126.112.166
> > google.ca has address 206.126.112.177
> > google.ca has address 206.126.112.172
> > google.ca has address 206.126.112.187
> > google.ca has address 206.126.112.151
> > google.ca has address 206.126.112.158
> > google.ca has address 206.126.112.157
> > google.ca has address 206.126.112.173
> > google.ca has address 206.126.112.181
> > google.ca has address 206.126.112.155
> > google.ca has address 206.126.112.147
> > google.ca has address 206.126.112.185
> > google.ca has address 206.126.112.143
> > google.ca has address 206.126.112.170
> > google.ca has address 206.126.112.162
> > google.ca has IPv6 address 2607:f8b0:4006:808::100f
> > google.ca mail is handled by 50 alt4.aspmx.l.google.com.
> > google.ca mail is handled by 30 alt2.aspmx.l.google.com.
> > google.ca mail is handled by 20 alt1.aspmx.l.google.com.
> > google.ca mail is handled by 10 aspmx.l.google.com.
> > google.ca mail is handled by 40 alt3.aspmx.l.google.com.
> > BlackBox:~ jlixfeld$
> >
> > That is not Google IPv4 address space, and those IPv4 IPs are not being
> > announced by 15169.
> >
> > Am I dumb in thinking that this is weird or is this sort of thing
> > commonplace?
>
>
>
>
> --
> Steven J. Schecter
> (m) 917.676.1646
>