AS146980

Name: AS146980 — Tokyo Metropolitan College of Industrial Technology Infomation System Engineering Course
Creator: ipdex

Tokyo Metropolitan College of Industrial Technology Infomation System Engineering Course Education registered in Japan

1IPv4 prefixes

1IPv6 prefixes

100%RPKI-valid

#50,114AS Rank

327/327RIS visibility

#651Rank in Japan

2021-08-25Allocated

Tokyo Metropolitan College of Industrial Technology Infomation System Engineering Course (AS146980) — Education, registered in Japan. announces 1 IPv4 prefixes + 1 IPv6 prefixes. Rank in Japan: #651. Allocated: 2021-08-25.

IPv4 1IPv6 1

Announced prefixes · 2

v4 103.184.10.0/24 valid
v6 2001:df0:8bc0::/48 valid

RPKI: rpki.cloudflare.com · 2026-06-17

Routing: 1 IPv4 · 1 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	2
2026-06-13	2

Internet Exchanges · 1

ENTERNET IX Tokyo 0 Mbps

AS topology · Customer cone 1

Providers · 3

AS2907 Research Organization of Information and Systems, National Institute of Informatics
AS59105 Home NOC Operators Group
AS59103 SoftEther Corporation

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