Hi Deepak.

Amazon documents the IPs for their public and private cloud services: https://docs.aws.amazon.com/general/latest/gr/aws-ip-ranges.html

(I know this because Batfish uses these in its reachability analysis, for example, "Make sure all outgoing flows to S3 are permitted by the firewall".)

Thanks,
Dan

On Tue, Jun 15, 2021 at 5:07 AM Karl Auer <kauer@biplane.com.au> wrote:
On Tue, 2021-06-15 at 11:37 +0000, Deepak Jain wrote:
> (I’m talking specifically about S3 not Route5x or whatever the DNS
> product is).

Route53.

Not sure what you mean by "S3 DNS". I wasn't aware S3 had any DNS
functionality at all... on the other hand, there is much indeed that I
do not know.

Regards, K.

--
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Karl Auer (kauer@biplane.com.au)
http://www.biplane.com.au/kauer