Autonomous system
AS9358 FINDER OPTAGE Inc.
Unclassified ARIN
Summary
OPTAGE Inc. (FINDER)
isp hosting legacy
AS9358 (FINDER) is registered to OPTAGE Inc., the telecommunications arm of the Kansai Electric Power Group in Osaka, Japan. OPTAGE was known as K-Opticom until a 2019 rebrand, and it runs its own fibre network across the Kansai region, selling broadband, telephony, TV and MVNO mobile under the eo brand, plus enterprise connectivity and colocation out of data centres in Osaka, Kyoto and Kobe.
What it's used for
This is a small, single-purpose corner of OPTAGE's estate rather than its main eyeball network. RIS sees exactly one announced prefix, 210.141.128.0/19 (8,192 addresses), no IPv6, and just one observed BGP neighbour. A single upstream and a single legacy /19 is the signature of a network that is originated for continuity rather than actively grown. OPTAGE's mass-market fibre subscribers and its larger transit footprint sit behind a different ASN, AS17511, which is the number you will normally see on eo Hikari customer traffic and at Japanese exchange points.
Notable
- The
FINDERhandle is a legacy registry name and does not describe the current holder. Read the ASN as OPTAGE, not as a company called Finder. - The single-neighbour topology means everything in this /19 reaches the internet through one path. It is a stub, not a transit network.
- OPTAGE is wholly owned by a regional electric utility, a common pattern in Japan where power companies built fibre along their own distribution rights-of-way and then sold access over it.
Interesting
Utility-owned telcos like OPTAGE are why Japan's regional fibre markets are genuinely competitive: the incumbent NTT lines compete against electric-company fibre in Kansai, Chubu and Kyushu, rather than against a cable overbuilder.
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
No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS17511 | OPTAGE Inc. | 59 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 1 prefixes · 8.19K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 1 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS9358- Registry name
- Finder
- Registered
- 1998-08-17
- Last changed
- 2019-05-30
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 1 with no ROA
- ROAs
- 0 authorising AS9358
- ASPA
- no ASPA record
- IRR
- 100% registered · 1 of 1 announcements
- Route objects
- 2 naming AS9358
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
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: 442 networks and 1,781 prefixes, as published 2026-10-16. 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