Autonomous system
AS2500 WIDE-BB WIDE Project
Unclassified ARIN
Summary
WIDE Project
education research legacy
WIDE-BB is a backbone network of the WIDE Project (Widely Integrated Distributed Environment), a long-running Japanese internet research consortium of universities and companies.
What it's used for
- Experimental and research networking for the WIDE Project's members and testbeds.
Notable
- A research-network address, not a commercial ISP or host. The low AS number reflects an early allocation to a pioneering research effort.
Interesting
- WIDE was founded in 1988 under Jun Murai (often called "the father of the internet in Japan") and has operated core internet infrastructure including one of the DNS root servers.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 3 exchanges in 2 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| BroadBand Internet eXchange Tokyo | Tokyo, Japan | 101.203.90.75 |
| BroadBand Internet eXchange Singapore | Singapore, Singapore | 103.231.152.253 |
| Network Service Provider IXP (Distributed IX in Edo) | Tokyo, Japan | 202.249.2.14 |
Transit providers
9 upstream, 19 downstream and 49 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 3 prefixes · 65.54K addresses IPv6 11 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 14 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS2500- Registry name
- WIDE-BB
- Registered
- 2002-04-05
- Last changed
- 2006-11-14
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 75% valid · 3 valid, 1 with no ROA
- ROAs
- 6 authorising AS2500
- ASPA
- no ASPA record
- IRR
- 100% registered · 4 of 4 announcements
- Route objects
- 34 naming AS2500
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 431 networks and 1,768 prefixes, as published 2026-10-12. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere