Autonomous system
AS18260 E-CATV EHIME CATV CO.,LTD.
Unclassified APNIC
Summary
Ehime CATV
cable residential isp japan
The AS handle E-CATV is held by Ehime CATV Co., Ltd.
What it's used for
- The address space carries residential cable internet traffic, evidenced by reverse DNS entries such as
101.1.80.0.user.e-catv.ne.jpand220.156.208.0.user.e-catv.ne.jp. - The network announces 78,592 IPv4 addresses across 21 prefixes and 1 IPv6 prefix, maintaining 24 observed neighbours, a ratio consistent with an access provider serving local subscribers.
Notable
- Registrants for the largest prefixes are uniformly listed as Japan Network Information Center with netnames
E-CATVore-catv-CIDR-BLK-JP, aligning with the announcer's identity. - The inventory includes a prefix with the netname
COSMOSTV(202.165.48.0/21) and another withemboma-CIDR-BLK-JP(103.194.72.0/22), suggesting historical acquisitions or managed space for other regional operators. - The address inventory is finely subdivided into multiple /22 and /23 blocks alongside larger /18 and /19 allocations, typical of a regional cable operator managing distinct service areas.
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 | 101.203.88.106 |
| JPIX Tokyo | Tokyo, Japan | 210.171.224.71 |
| BroadBand Internet eXchange Osaka | Osaka, Japan | 218.100.9.199 |
| Network Service Provider IXP (Distributed IX in Edo) | Tokyo, Japan | 202.249.2.181 |
Transit providers
10 upstream, 3 downstream and 22 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 21 prefixes · 78.59K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 22 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS18260- Registry name
- e-catv
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2002-07-01
- Last changed
- 2022-07-22
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 96% valid · 23 valid, 1 with no ROA
- ROAs
- 20 authorising AS18260
- ASPA
- no ASPA record
- IRR
- 100% registered · 24 of 24 announcements
- Route objects
- 34 naming AS18260
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: 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