Autonomous system
AS18121 INCL Ishikawa Computer Center Co.,LTD.
Residential APNIC
Summary
Ishikawa Computer Center
business isp japan enterprise
INCL is operated by Ishikawa Computer Center Co.,LTD., a regional internet service provider in Japan.
What it's used for
- The address space carries a mix of corporate and consumer services, evidenced by reverse DNS entries for
ocx-compute.com,asagaotv.ne.jp,luckynet.jp, andtvk.ne.jp. - The network announces 22,528 IPv4 addresses across 10 prefixes and 1 IPv6 prefix, with 19 observed routing neighbours, indicating a role as a regional access provider connecting to multiple upstreams.
Notable
- All registrants are listed as Japan Network Information Center (JPNIC) with IRT-JPNIC-JP, consistent with standard Japanese IP allocation practices.
- The inventory includes netnames
incl-CIDR-BLK-JP,INCL,TVK-NET, andmitene-internet-CIDR-BLK-JP, suggesting the operator manages or has historically managed space for related entities or acquired assets. - The address inventory is finely subdivided into multiple /20, /21, /23, and /24 blocks, typical of a corporate or regional ISP estate rather than a large national backbone.
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 4 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| BroadBand Internet eXchange Tokyo | Tokyo, Japan | 101.203.88.78 |
| JPIX Tokyo | Tokyo, Japan | 210.171.224.105 |
| BroadBand Internet eXchange Osaka | Osaka, Japan | 218.100.9.49 |
| JPIX Osaka | Osaka, Japan | 103.246.232.105 |
Transit providers
7 upstream, 0 downstream and 12 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 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 10 prefixes · 22.53K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 11 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS18121- Registry name
- INCL
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2002-03-21
- Last changed
- 2005-08-27
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 71% valid · 5 valid, 2 with no ROA
- ROAs
- 6 authorising AS18121
- ASPA
- no ASPA record
- IRR
- 71% registered · 5 of 7 announcements
- Route objects
- 5 naming AS18121
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 1,768 prefixes, as published 2026-10-12. 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