AS3258

Name: AS3258 — xTom Japan Corporation
Creator: ipdex

xTom Japan Corporation ISP registered in Japan

116IPv4 prefixes

24IPv6 prefixes

100%RPKI-valid

#4,872AS Rank

327/327RIS visibility

#30Rank in Japan

2011-06-17Allocated

xTom Japan Corporation (AS3258) — ISP, registered in Japan. announces 116 IPv4 prefixes + 24 IPv6 prefixes. Rank in Japan: #30. Allocated: 2011-06-17.

IPv4 116IPv6 24

Announced prefixes · 140

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

Routing: 116 IPv4 · 25 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	140
2026-06-13	140

Internet Exchanges · 3

BBIX Tokyo Tokyo 100 Gbps
Equinix Tokyo Tokyo 100 Gbps
JPNAP Tokyo Tokyo 100 Gbps

Facilities · 9

9 Facilities · 2 Countries

Broadband Tower - Monzen-nakacho Bldg. Tokyo
COLT in Asia Tokyo Data Center 1 (TDC1) Tokyo
Equinix OS1 - Osaka Osaka
Equinix SY3 - Sydney Sydney
Equinix SY5 - Sydney Sydney
Equinix TY1 - Tokyo Tokyo
Equinix TY8 - Tokyo Tokyo
NTT DATA Dojima (building #4) Osaka
NTT DATA Otemachi Bldg Tokyo

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AS3258

Announced prefixes · 140

Prefix history

Internet Exchanges · 3

Facilities · 9

AS topology · Customer cone 4

Providers · 3

Peers · 16

Customers · 3

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