AS7527 — JPIX Japan Internet Xing Co., Ltd.

AS7527 announces 2 IPv4 prefixes covering 1,536 addresses and 13 IPv6 prefixes.

About this network

JPIX — Japan Internet Xing Co., Ltd., the operator of the JPIX internet exchange. Launched in November 1997 as Japan's first commercial IX, backed by a consortium that included KDD, NEC, Fujitsu and Sony.

What it's used for

• Running the JPIX exchange fabrics (Tokyo, Osaka and other sites) where Japanese and international networks peer with one another.
• JPIX's own infrastructure: route servers, looking glasses, DNS, management and the company's corporate services.

Notable

• This is IXP infrastructure, not a network with users. Its ~1,500 IPv4 addresses carry routers, route servers and management hosts — rDNS resolves to names like gw.jpix.ad.jp, ns1.jpix.ad.jp and bb-fw firewall interfaces.
• The exchange's peering LAN prefixes are deliberately not routed on the global internet, so the traffic JPIX actually carries never appears in this AS's announcements. Address count says nothing about its importance.
• An IXP has no honest bucket in a hosting/eyeball/transit taxonomy: it is a meeting point, not a provider. Treat it as infrastructure, as with AS4641 (HKIX) and AS5459 (LINX).

Interesting

• The company kept the JPIX brand but is registered as "Japan Internet Xing" — the crossing/exchange pun survives the rename.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 210.171.226.0/23
• 210.171.228.0/22
• 2400:3000::/41
• 2400:3000:73::/48
• 2400:3000:74::/46
• 2400:3000:78::/45
• 2400:3000:80::/41
• 2400:3000:100::/40
• 2400:3000:200::/39
• 2400:3000:400::/38
• 2400:3000:800::/37
• 2400:3000:1000::/36
• 2400:3000:2000::/35
• 2400:3000:4000::/34
• 2400:3000:8000::/33

Upstream networks

• AS2497 Internet Initiative Japan Inc.
• AS2516 KDDI CORPORATION

Downstream networks

• AS24257 Japan Internet Xing Co., Ltd.

Adjacent networks

• AS2497 Internet Initiative Japan Inc.
• AS2516 KDDI CORPORATION
• AS24257 Japan Internet Xing Co., Ltd.

Internet exchanges

• JPIX Tokyo — Tokyo, Japan
• Network Service Provider IXP (Distributed IX in Edo) — Tokyo, Japan