AS7522 — STCN STNet, Incorporated

Network type: residential

AS7522 announces 51 IPv4 prefixes covering 594,944 addresses and 1 IPv6 prefixes.

About this network

STCN — STNet, Incorporated, the telecom arm of the Shikoku Electric Power group, based in Takamatsu. It runs Pikara, the fibre broadband service used across Japan's Shikoku island.

What it's used for

• Consumer and business fibre (FTTH) internet access in the four Shikoku prefectures: Kagawa, Tokushima, Ehime and Kochi.
• STNet's own data-centre, system-integration and corporate network services.

Notable

• An eyeball network: the ~595k IPv4 addresses across ~50 prefixes resolve overwhelmingly to subscriber space named opt-IP-ADDR.client.pikara.ne.jp, which is Pikara's FTTH customer pool. Addresses here belong to homes and small businesses on Shikoku, not to servers.
• Geographically well-behaved for a Japanese ISP: it is a regional operator, so its space really does concentrate in one part of the country rather than being spread nationally like NTT's or SoftBank's.

Interesting

• STNet is one of several Japanese ISPs founded by a regional electric utility to monetise the fibre it had already strung for grid telemetry. The same pattern produced TOHKnet (AS7516) in Tohoku.

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

Announced prefixes

• 27.120.144.0/20
• 27.120.160.0/20
• 27.133.48.0/20
• 27.134.128.0/19
• 27.134.160.0/20
• 36.52.96.0/20
• 36.53.240.0/20
• 59.156.144.0/20
• 61.206.0.0/20
• 61.215.240.0/20
• 101.1.128.0/17
• 103.3.12.0/22
• 110.2.192.0/19
• 115.30.128.0/17
• 115.31.0.0/18
• 119.150.0.0/19
• 119.150.240.0/20
• 122.129.160.0/19
• 122.145.48.0/20
• 122.145.64.0/19
• 122.145.96.0/20
• 122.248.64.0/19
• 123.230.0.0/16
• 123.254.0.0/18
• 125.215.64.0/18
• 133.123.0.0/16
• 150.52.0.0/16
• 175.103.224.0/19
• 183.176.0.0/16
• 202.11.160.0/22
• 202.67.16.0/20
• 202.70.208.0/20
• 202.84.80.0/20
• 202.240.176.0/23
• 202.243.187.0/24
• 202.246.114.0/24
• 202.255.16.0/21
• 203.112.32.0/19
• 203.139.192.0/19
• 210.142.224.0/19
• 210.157.224.0/19
• 210.159.176.0/20
• 211.7.224.0/19
• 211.132.64.0/19
• 218.40.112.0/20
• 218.231.48.0/20
• 219.106.160.0/20
• 219.109.96.0/19
• 219.124.160.0/19
• 220.150.48.0/20
• 220.208.0.0/19
• 2001:318::/32

Upstream networks

• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS2516 KDDI CORPORATION
• AS2497 Internet Initiative Japan Inc.
• AS4637 Telstra Global
• AS2519 ARTERIA Networks Corporation
• AS17676 SoftBank Corp.
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS50300 CustodianDC Limited
• AS48185 team.blue NV
• AS24482 SG.GS
• AS48362 Stadtwerke Feldkirch
• AS50673 Serverius Holding B.V.
• AS20766 Association "Gitoyen"
• AS34927 iFog GmbH
• AS12779 IT.Gate S.p.A.
• AS17639 Converge ICT Solutions Inc.
• AS49559 A-Systems Sp. z o.o.
• AS3216 PJSC "Vimpelcom"
• AS37100 SEACOM Limited
• AS57463 NetIX Communications JSC
• AS12552 GlobalConnect AB
• AS37721 Virtual Technologies & Solutions
• AS7575 Australian Academic and Research Network (AARNet)
• AS29632 Netassist International EOOD

Downstream networks

• AS9618 catv-tokushima
• AS58647 Kagawa University
• AS18260 EHIME CATV CO.,LTD.

Adjacent networks

• AS1299 Arelion Sweden AB
• AS2516 KDDI CORPORATION
• AS6939 Hurricane Electric LLC
• AS2497 Internet Initiative Japan Inc.
• AS4637 Telstra Global
• AS2519 ARTERIA Networks Corporation
• AS18260 EHIME CATV CO.,LTD.
• AS9618 catv-tokushima
• AS58647 Kagawa University
• AS37721 Virtual Technologies & Solutions
• AS17676 SoftBank Corp.
• AS24482 SG.GS
• AS17639 Converge ICT Solutions Inc.
• AS7575 Australian Academic and Research Network (AARNet)
• AS50673 Serverius Holding B.V.
• AS48362 Stadtwerke Feldkirch
• AS48185 team.blue NV
• AS50300 CustodianDC Limited
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS12552 GlobalConnect AB
• AS57463 NetIX Communications JSC
• AS37100 SEACOM Limited
• AS3216 PJSC "Vimpelcom"
• AS34927 iFog GmbH
• AS12779 IT.Gate S.p.A.

Internet exchanges

• AMS-IX Amsterdam — Amsterdam, Netherlands
• BroadBand Internet eXchange Tokyo — Tokyo, Japan
• Coresite - Any2 West — Los Angeles, United States
• Any2 California — Los Angeles, United States
• JPIX Tokyo — Tokyo, Japan
• BroadBand Internet eXchange Singapore — Singapore, Singapore
• BroadBand Internet eXchange Osaka — Osaka, Japan
• Equinix Internet Exchange Tokyo — Tokyo, Japan
• JPIX Osaka — Osaka, Japan
• BroadBand Internet eXchange Hong Kong — Hong Kong, China
• Korea Internet Neutral Exchange KINX — Seoul, South Korea
• Network Service Provider IXP (Distributed IX in Edo) — Tokyo, Japan