
nanog mailing list archives
Re: ARIN Waiting List Recipients Begin Receiving Allocated IPs from 131.143.0.0/16
From: Zhang Gaoxing via NANOG <nanog () lists nanog org>
Date: Wed, 8 Oct 2025 19:04:04 +0400
NetRange: 131.143.124.0 - 131.143.124.255
CIDR: 131.143.124.0/24 NetName: BLUETYPE-CHI-01 NetHandle: NET-131-143-124-0-1 Parent: NET131 (NET-131-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: BlueType LLC (BL-1105) RegDate: 2025-10-07 Updated: 2025-10-07 Ref: https://rdap.arin.net/registry/ip/131.143.124.0 NetRange: 131.143.124.0 - 131.143.124.255 CIDR: 131.143.124.0/24 NetName: BLUETYPE-CHI-01 NetHandle: NET-131-143-124-0-1 Parent: NET131 (NET-131-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: BlueType LLC (BL-1105) RegDate: 2025-10-07 Updated: 2025-10-07 Ref: https://rdap.arin.net/registry/ip/131.143.124.0
I noticed that the ARIN Waiting List has recently decreased quite a bit. Then I found that a new company I’ve been following, along with several others, has received newly allocated IPs from this same range. The allocations might not cover the entire /16 block, but these new IP assignments don’t appear in ARIN’s cleared IPv4 blocks list <https://www.arin.net/resources/guide/ipv4/blocks_cleared/> — perhaps it just hasn’t been updated yet. On Wed, 8 Oct 2025 at 22:04, Ezri Zhu <me () ezrizhu com> 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 hasbeendecreasing significantly recently, and some have started receiving IP allocations from the 131.143.0.0/16 range. I also found that these IPswerepreviously 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! -- ezri
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Current thread:
- ARIN Waiting List Recipients Begin Receiving Allocated IPs from 131.143.0.0/16 Zhang Gaoxing via NANOG (Oct 08)
- Re: ARIN Waiting List Recipients Begin Receiving Allocated IPs from 131.143.0.0/16 Ezri Zhu via NANOG (Oct 08)
- Re: ARIN Waiting List Recipients Begin Receiving Allocated IPs from 131.143.0.0/16 Zhang Gaoxing via NANOG (Oct 08)
- Re: ARIN Waiting List Recipients Begin Receiving Allocated IPs from 131.143.0.0/16 Ezri Zhu via NANOG (Oct 08)
- Re: ARIN Waiting List Recipients Begin Receiving Allocated IPs from 131.143.0.0/16 Trey Scarborough via NANOG (Oct 08)
- Re: ARIN Waiting List Recipients Begin Receiving Allocated IPs from 131.143.0.0/16 Zhang Gaoxing via NANOG (Oct 08)
- Re: ARIN Waiting List Recipients Begin Receiving Allocated IPs from 131.143.0.0/16 Zhang Gaoxing via NANOG (Oct 08)
- Re: ARIN Waiting List Recipients Begin Receiving Allocated IPs from 131.143.0.0/16 Ezri Zhu via NANOG (Oct 08)