Stephane Bortzmeyer wrote on 19/08/2024 14:00:
> On Mon, Aug 19, 2024 at 03:55:03PM +0330, Milad Afshari <afshar.milad89@gmail.com> wrote  a message of 82 lines which said:
>
>> Could you please provide the exact IP range(s) used by the RIPE Atlas
>> infrastructure? This information is crucial for our ongoing network
>> configuration.
>
> % dig +short atlas.ripe.net A
> 193.0.6.158
>
> % dig +short atlas.ripe.net AAAA
> 2001:67c:2e8:22::c100:69e
>
> (whois or RDAP to get the complete prefix).
>
> Or I don't understand the question?

if it's probes and anchors, then the address blocks are 0.0.0.0/0 and
::/0. If it's the RIPE controller infrastructure, then something inside
the RIPE address blocks, which are available publicly.

For the OP, the RIPE NCC hasn't committed to keeping the Atlas
infrastructure tied to any particular IP address ranges. I.e. if you're
planning to configure any ACLs based on these IP addresses, that may
break things in future.

Nick