AS2500 WIDE Project 🇯🇵 JP

Announcing 4 prefixes, seen at the RIS collectors.

IPv4 prefixes

65,536 (256 × /24)

IPv6 prefixes

1 × /32

Upstreams

transit providers observed

Peers

settlement-free adjacencies

Downstreams

transit customers observed

Customer cone

2,561

ASes reachable through it

Registry and operator data

AS number: AS2500
Name: WIDE Project
Organisation: WIDE Project
Country: 🇯🇵 JP
RIR: APNIC
Allocated: 2002-04-05
Network type: Educational/Research
Scope: Asia Pacific
Peering policy: Open
IRR as-set: AS2500:AS-TRANSIT
Website: https://www.wide.ad.jp/
PeeringDB: net/831
Exchanges: 4

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

3 valid (75.0%) 0 invalid (0.0%) 1 no ROA (25.0%)

Upstreams

Networks seen providing transit to this one

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS2914 NTT America, Inc.	🇺🇸 US	56,390	1,623	145	CAIDA
AS17676 SoftBank Corp.	🇯🇵 JP	21,830	482	396	CAIDA

Peers

Adjacencies that look settlement-free rather than transit

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS6939 Hurricane Electric LLC	🇺🇸 US	53,220	236	191	CAIDA
AS9002 RETN Limited	🇬🇧 GB	50,914	19	13	CAIDA
AS2516 KDDI Corporation	🇯🇵 JP	21,821	560	1	CAIDA
AS24482 SG.GS	🇸🇬 SG	4,774	45	23	CAIDA
AS2907 Science Information Network	🇯🇵 JP	2,670	605	4	CAIDA
AS132132 MyRepublic Ltd.	🇸🇬 SG	172	7	27	CAIDA
AS7530 BroadBand Tower, Inc.	🇯🇵 JP	8	3	14	CAIDA

Downstreams

Networks this one appears to provide transit to

Network	Country	Cone	IPv4 prefixes	Paths	Source
AS7660 Asia Pacific Advanced Network - Japan	🇯🇵 JP	2,544	2	39	CAIDA
AS4777 Asia Pacific Network Information Centre	🇯🇵 JP	6	2	8	CAIDA
AS141682 APIDT Infrastructure Pty Ltd	🇦🇺 AU	2	1	73	CAIDA
AS2515 Japan Network Information Center	🇯🇵 JP	2	4	9	CAIDA
AS23799 National Defense Academy	🇯🇵 JP	0	4	168	CAIDA
AS63783 Chiba University of Commerce	🇯🇵 JP	0	3	84	CAIDA
AS4690 WIDE Project	🇯🇵 JP	0	1	76	CAIDA
AS55384 Japan Advanced Institute of Science and Technology	🇯🇵 JP	0	1	76	CAIDA
AS17932 Japan Advanced Institute of Science and Technology	🇯🇵 JP	0	2	68	CAIDA
AS131158 Nara Institute of Science and Technology, National University Corporation	🇯🇵 JP	0	2	34	CAIDA
AS4717 WIDE Project	🇯🇵 JP	0	0	33	CAIDA
AS38635 Keio University	🇯🇵 JP	0	2	18	CAIDA
AS2501 The University of Tokyo	🇯🇵 JP	0	4	16	CAIDA
AS4718 Cyber Kansai Project	🇯🇵 JP	0	1	8	CAIDA
AS10014 Nihon University	🇯🇵 JP	0	1	4	CAIDA
AS9367 Institute of Science Tokyo	🇯🇵 JP	0	2	4	CAIDA
AS7667 KDDI Research, Inc.	🇯🇵 JP	0	2	3	CAIDA

Relationships marked inferred come from where the two networks sit on the AS paths the collectors see, which is a guess and is wrong for some of them. The rest are stated by CAIDA's published inference over a much wider set of collectors.