Autonomous system
AS24279 CAT-V SENDAI CATV CO.,LTD.
Residential RIPE
Summary
Sendai CATV
cable residential isp japan
The AS handle CAT-V is held by Sendai CATV Co., Ltd.
What it's used for
- The address space carries residential cable broadband traffic, evidenced by reverse DNS entries such as
c133-226-148-0.dhcp.cat-v.ne.jpandc202-162-84-0.dhcp.cat-v.ne.jp. - The network announces 14,336 IPv4 addresses across 7 prefixes and 1 IPv6 prefix, maintaining 22 observed neighbours, a ratio consistent with an access provider serving local subscribers.
Notable
- All RDAP registrants are listed as Japan Network Information Center (JPNIC), which is standard for Japanese address space allocation, while the netnames (e.g.,
CAT-V-NET01) confirm the operator's identity. - The inventory consists of seven distinct IPv4 blocks, including two /20s, one /21, and four /22s, alongside a single /32 IPv6 prefix.
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 3 countries, largest first.
| Exchange | Location | Their address |
|---|---|---|
| BroadBand Internet eXchange Tokyo | Tokyo, Japan | 101.203.89.81 |
| JPIX Tokyo | Tokyo, Japan | 210.171.224.187 |
| BroadBand Internet eXchange Singapore | Singapore, Singapore | 103.231.152.46 |
| BroadBand Internet eXchange Hong Kong | Hong Kong, China | 103.203.158.46 |
Transit providers
8 upstream, 0 downstream and 13 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 2026-10-13, 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 · 14.34K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 8 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS24279- Registry name
- CAT-V
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2004-10-19
- Last changed
- 2009-03-13
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 8 valid, 0 with no ROA
- ROAs
- 8 authorising AS24279
- ASPA
- no ASPA record
- IRR
- 0% registered · 0 of 8 announcements
- Route objects
- 0 naming AS24279
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: 436 networks and 1,771 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