Autonomous system
AS24271 ICTV Iruma CATV co.
Unclassified APNIC Cable/DSL/ISP
Summary
iCTV - Iruma CATV co.
cable residential isp japan
The AS handle ICTV Iruma CATV co. is held by iCTV - Iruma CATV co.
What it's used for
- The address space carries residential cable access, evidenced by reverse DNS entries such as
ftu080000.ictv.ne.jpandftu24218000.ictv.ne.jpwhich follow a standard cable modem termination system naming convention. - The network announces 18432 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, while maintaining 21 observed neighbours; this ratio of significant address space against a moderate peer count is characteristic of a regional access provider rather than a transit carrier.
Notable
- The registrants for both announced prefixes are listed as Japan Network Information Center; IRT-JPNIC-JP, which is the standard registry holder for Japanese IP space and does not indicate a mismatch with the operator.
- The address inventory consists of one large /18 block (202.177.64.0/18) and one smaller /21 block (218.231.216.0/21), alongside a /32 IPv6 allocation, reflecting a typical allocation structure for a local cable operator.
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 2 exchanges in 1 country, largest first.
| Exchange | Location | Their address |
|---|---|---|
| BroadBand Internet eXchange Tokyo | Tokyo, Japan | 101.203.90.58 |
| JPIX Tokyo | Tokyo, Japan | 210.171.224.216 |
Transit providers
6 upstream, 0 downstream and 9 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 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 2 prefixes · 18.43K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 3 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS24271- Registry name
- iCTV
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2004-10-19
- Last changed
- 2024-07-01
- Allocation
- allocated
Declared
PeeringDB profile
- Name
- Iruma CableTV
- Also known as
- iCTV
- Network type
- Cable/DSL/ISP
- Scope
- Asia Pacific
- Traffic ratio
- Heavy Inbound
- Peering policy
- Open
- IRR as-set
AS-ICTVNET- Present at
- 3 exchanges
- Website
- https://ictv.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 · 9 valid, 0 with no ROA
- ROAs
- 6 authorising AS24271
- ASPA
- no ASPA record
- IRR
- 89% registered · 8 of 9 announcements
- Route objects
- 8 naming AS24271
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 1,784 prefixes, as published 2026-10-19. 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