Autonomous system
AS23831 CLOVERNET NISIOWARI CATV CORPORATION
Unclassified ARIN Cable/DSL/ISP
Summary
Clovernet
cable residential isp japan
The AS handle CLOVERNET is operated by Nisiowari CATV Corporation.
What it's used for
- The address space carries residential cable internet traffic, evidenced by reverse DNS entries such as
user040000.clovernet.ne.jpanduser148000.clovernet.ne.jp. - The network announces 18,432 IPv4 addresses across 7 prefixes and 1 IPv6 prefix, with only 1 observed neighbour, indicating a local access network rather than a transit provider.
Notable
- All registrants for the announced prefixes are listed as Japan Network Information Center (JPNIC), which is consistent with the Japanese allocation authority for this operator.
- The address inventory consists of a mix of /19, /20, /21, and /22 blocks, all under the netname
CLOVERNET-CIDR-BLK-JP.
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 2 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS9354 | Community Network Center Inc. | 450 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 7 prefixes · 18.43K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 8 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS23831- Registry name
- CLOVERNET
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2003-06-16
- Last changed
- 2004-10-09
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- NISIOWARI CATV
- Network type
- Cable/DSL/ISP
- Scope
- Asia Pacific
- Traffic ratio
- Mostly Inbound
- Peering policy
- Open
- IRR as-set
AS-23831- Website
- https://www.clovertv.jp/
PeeringDB records are maintained by the network operator and are not independently verified. Treat them as a statement of intent rather than of fact. For the observed and recorded view, see peering, which lists the exchanges Packet Clearing House has a port on file for.
Routing security
RPKI and IRR
- RPKI
- 100% valid · 8 valid, 0 with no ROA
- ROAs
- 8 authorising AS23831
- ASPA
- no ASPA record
- IRR
- 13% registered · 1 of 8 announcements
- Route objects
- 2 naming AS23831
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 1,773 prefixes, as published 2026-10-13. 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