AS2500 — WIDE-BB - WIDE Project

AS2500 announces 3 IPv4 prefixes covering 65,536 addresses and 10 IPv6 prefixes.

About this network

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.

Announced prefixes

• 133.4.128.0/18
• 202.249.0.0/18
• 203.178.128.0/17
• 2001:200::/37
• 2001:200:700::/40
• 2001:200:800::/40
• 2001:200:a00::/39
• 2001:200:c00::/39
• 2001:200:f00::/40
• 2001:200:1000::/36
• 2001:200:2000::/35
• 2001:200:4000::/34
• 2001:200:8000::/34

Upstream networks

• AS2914 NTT America, Inc.
• AS17676 SoftBank Corp.
• AS6939 Hurricane Electric LLC
• AS7660 Asia Pacific Advanced Network - Japan
• AS24482 SG.GS
• AS132132 MyRepublic Ltd.
• AS141682 APIDT Infrastructure Pty Ltd
• AS9002 RETN Limited
• AS2497 Internet Initiative Japan Inc.

Downstream networks

• AS23799 National Defense Academy
• AS63783 Chiba University of Commerce
• AS55384 Japan Advanced Institute of Science and Technology
• AS4690 WIDE Project
• AS141682 APIDT Infrastructure Pty Ltd
• AS17932 Japan Advanced Institute of Science and Technology
• AS131158 Nara Institute of Science and Technology, National University Corporation
• AS4717 WIDE Project
• AS2515 Japan Network Information Center
• AS2501 The University of Tokyo
• AS38635 Keio University
• AS4718 Cyber Kansai Project
• AS4777 Asia Pacific Network Information Centre
• AS10014 Nihon University
• AS7660 Asia Pacific Advanced Network - Japan
• AS23634 WIDE Project
• AS9367 Institute of Science Tokyo
• AS7500 WIDE Project

Adjacent networks

• AS17676 SoftBank Corp.
• AS23799 National Defense Academy
• AS6939 Hurricane Electric LLC
• AS2914 NTT America, Inc.
• AS7660 Asia Pacific Advanced Network - Japan
• AS63783 Chiba University of Commerce
• AS141682 APIDT Infrastructure Pty Ltd
• AS55384 Japan Advanced Institute of Science and Technology
• AS4690 WIDE Project
• AS17932 Japan Advanced Institute of Science and Technology
• AS131158 Nara Institute of Science and Technology, National University Corporation
• AS4717 WIDE Project
• AS132132 MyRepublic Ltd.
• AS2515 Japan Network Information Center
• AS2501 The University of Tokyo
• AS38635 Keio University
• AS24482 SG.GS
• AS7530 BroadBand Tower, Inc.
• AS4718 Cyber Kansai Project
• AS9002 RETN Limited
• AS4777 Asia Pacific Network Information Centre
• AS2497 Internet Initiative Japan Inc.
• AS2516 KDDI CORPORATION
• AS10014 Nihon University
• AS2907 Research Organization of Information and Systems, National Institute of Informatics

Routing security

• RPKI: 3 valid, 0 invalid and 1 not-found announcements; 6 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 33 route objects.
• Listed in as-sets: AS-2500-2914, AS-2500ARCSTAR, AS-BBIX-T, AS-BBIX-T-V6, AS-IIJ, AS-IIJ6, AS-IXP2, AS-NSPIXP2, AS-RIS-RRC06, AS-WIDE, AS-WIDE-V6, AS20965:AS-FROM-TEIN-TO-GEANT, AS2497:AS-IIJ, AS2497:AS-IIJ6, AS2500:AS-TRANSIT, AS2914:AS-64600-V6, AS293:AS-FROM-SINGAREN-TO-ESNET, AS30071:AS-TBONE, AS7575:AS-PEER.

Internet exchanges

• BroadBand Internet eXchange Tokyo — Tokyo, Japan
• BroadBand Internet eXchange Singapore — Singapore, Singapore
• Network Service Provider IXP (Distributed IX in Edo) — Tokyo, Japan