Autonomous system
AS7522 STCN STNet, Incorporated
Residential APNIC
Summary
STNet (Pikara)
isp eyeball legacy
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. Source, and how to suggest an edit.
Interconnection
Peering at a glance
Internet exchanges
Recorded at 12 exchanges in 6 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| AMS-IX Amsterdam | Amsterdam, Netherlands | 80.249.212.220 |
| BroadBand Internet eXchange Tokyo | Tokyo, Japan | 101.203.88.19 |
| Coresite - Any2 West | Los Angeles, United States | 206.72.211.236 |
| Any2 California | Los Angeles, United States | 206.72.211.236 |
| JPIX Tokyo | Tokyo, Japan | 210.171.224.151 |
| BroadBand Internet eXchange Singapore | Singapore, Singapore | 103.231.152.134 |
| BroadBand Internet eXchange Osaka | Osaka, Japan | 218.100.9.160 |
| Equinix Internet Exchange Tokyo | Tokyo, Japan | 2001:de8:5::7522:1 |
Transit providers
28 upstream, 3 downstream and 47 adjacent networks observed; most-used upstreams first.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 51 prefixes · 595K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 52 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS7522- Registry name
- STCN
- Registered
- 1997-03-03
- Last changed
- 2011-02-09
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 55 with no ROA
- ROAs
- 0 authorising AS7522
- ASPA
- no ASPA record
- IRR
- 100% registered · 55 of 55 announcements
- Route objects
- 55 naming AS7522
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
Spamhaus DROP
Not on ASN-DROP The network as a whole is not listed.
No DROP prefixes None of its announced space is on the DROP prefix list.
Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 431 networks and 1,775 prefixes, as published 2026-10-11. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.
FBI IC3
No IC3 indicators Nothing from the FBI IC3 feed.
IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere