nanog mailing list archives

Re: Any comprehensive listing of where Google's IPs originate from?


From: Christopher Morrow <morrowc.lists () gmail com>
Date: Wed, 6 Dec 2023 11:18:15 -0500

On Tue, Dec 5, 2023 at 5:09 PM Tom Beecher <beecher () beecher cc> wrote:

i would expect that google announces the /16 at least from 'everywhere', yes.


I see the specific /18s Drew asked about initially. Didn't check for the covering /16.


sure, good enough :) (I have not looked at our config in a bit to be sure)

On Tue, Dec 5, 2023 at 1:29 PM Christopher Morrow <morrowc.lists () gmail com> wrote:

On Tue, Dec 5, 2023 at 11:06 AM Tom Beecher <beecher () beecher cc> wrote:

From my observations, all us-east-5 IPs are announced via transit and peering at all of my locations Chicago and 
east.


i would expect that google announces the /16 at least from 'everywhere', yes.

On Mon, Dec 4, 2023 at 9:11 AM Drew Weaver <drew.weaver () thenap com> wrote:

Hello,



We are trying to reduce latency to a region in Google Cloud which we are in the same city of. Latency is 
currently about 22ms rt for the traffic to go 9 miles.



I am having the hardest time finding any comprehensive list of what exchanges, transit, etc their IP addresses 
are being announced over.


100% chance the best option is peeringdb ....(I'm betting closest to
drew is chicago-land-ix-ville)



Specifically trying to get closer to addresses in these prefixes:



34.162.192.0/18

34.162.64.0/18



Any info is greatly appreciated.



Thanks,

-Drew






















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