Google served from non-google IPs?

manning bmanning at karoshi.com
Sat Mar 14 20:16:37 UTC 2015


one of the legacy uses of an IX was to place “content” near the eyeballs.   For the adventurous, this meant placing NTP chimers, DNS & route servers,
and even content directly on the switch mesh.  Akamai might have been the first to pull back from that and move its services behind an Akamai router
that was on the switch mesh.

These days, most folks use BGP “condoms” to protect themselves.

manning
bmanning at karoshi.com
PO Box 12317
Marina del Rey, CA 90295
310.322.8102



On 14March2015Saturday, at 12:55, Dave Temkin <dave at temk.in> wrote:

> 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
>> 



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