Re: ARIN Waiting List Recipients Begin Receiving Allocated IPs from 131.143.0.0/16

[Trey Scarborough via NANOG <nanog () lists nanog org>]

most recent ARIN issued report

[arin-issued] Daily Report for 2025-10-07

Add 131.143.16.0-131.143.19.255
through
Add 131.143.235.0-131.143.235.255

131.143.0.0/16 was issued to Rockwell so its easy to see that there 
could be blocks that existed globally.

Trey

On 10/8/25 1:04 PM, Ezri Zhu via NANOG wrote:
> zgx,
>
> On Wed Oct 8, 2025 at 9:39 AM EDT, Zhang Gaoxing via NANOG wrote:
> > I have noticed that the number of people on the ARIN Waiting List has been
> > decreasing significantly recently, and some have started receiving IP
> > allocations from the 131.143.0.0/16 range. I also found that these IPs were
> > previously geolocated in Switzerland. Were these addresses reclaimed from
> > an organisation? I’m curious about the origin of these IPs.
> Have you checked out
> https://stat.ripe.net/resource/131.143.0.0-131.143.207.255#tab=database
> yet? it has some nice graphs showing all the historical
> announcements from that range. Sadly the page takes forever to
> load due to the size.
>
> However, I failed to find the 131.143.0.0/16 range from the ARIN
> "Cleared for Waiting List" CSV, may I ask how you found that
> range?
>
> btw, i'd recommend signing up for
> https://www.arin.net/reference/research/whowas/ as that's
> probably your best bet.
>
> let us know how it goes!
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