Google served from non-google IPs?

Fri Mar 27 20:07:23 UTC 2015

Hi Jason,

This is not commonplace. That prefix is from a specially designated IXP
micro allocation block. See http://bit.ly/1OEcHde for detail. The use of
these specially designated blocks is for IXPs only.

We (Akamai) don't have equipment numbered into this type of address space
nor do we have any evidence that we have in the past. We certainly won't in
the future. If someone knows of anything that we missed, contact me
directly and we'll arrange to renumber.

Hope that helps.

Best,

-M<

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?