[ARIN-consult] Question/Suggestion on ASN registration

[William Herrin]

On Fri, Feb 23, 2024 at 5:10 AM LayerBridge Internal via ARIN-consult
<arin-consult at arin.net> wrote:
> Almost all companies would agree that 63 ASNs for a single entity is somehow too much. Most of us really use 1-5 ASNs at most.

Hi Andrei,

It depends how you're using them. If you're anycasting a prefix from a
lot of locations and you do so using different AS numbers, you can
then access routing data from RIS and Routeviews and find out which
announcement reached where without needing active probes. 32-bit AS
numbers aren't especially scarce and the RIB and FIB entries don't
take any more space when you announce with multiple numbers, so
there's no real downside to doing this.

When a separate organization needs AS numbers, I'd personally rather
see them get those numbers directly from ARIN rather than from their
ISP.

Regards,
Bill Herrin

-- 
William Herrin
bill at herrin.us
https://bill.herrin.us/