AS38635

Name: AS38635 — Keio University
Creator: ipdex

Keio University Unknown registered in Japan

2IPv4 prefixes

2IPv6 prefixes

#29,415AS Rank

327/327RIS visibility

#470Rank in Japan

2007-08-20Allocated

Keio University (AS38635) — Unknown, registered in Japan. announces 2 IPv4 prefixes + 2 IPv6 prefixes. Rank in Japan: #470. Allocated: 2007-08-20.

IPv4 2IPv6 2

Announced prefixes · 4

v4 131.113.0.0/16 unknown
v4 133.27.0.0/16 unknown
v6 2001:df0:eb::/48 unknown
v6 2001:df2:c900::/48 unknown

Routing: 2 IPv4 · 2 IPv6 announced · RIS visibility 327/327 RIS peers · RIPEstat · 2026-06-17

Prefix history

Announced prefixes Source: ipdex daily snapshot · sparse rows, value holds until the next change (steps)

Data table

Day	Announced prefixes
2026-06-12	4
2026-06-13	4

AS topology · Customer cone 1

Providers · 2

AS2500 WIDE Project
AS2907 Research Organization of Information and Systems, National Institute of Informatics

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