Autonomous system
AS10019 MCTV Matsusaka Cable-TV Station Inc.
Residential APNIC
Summary
Matsusaka Cable-TV Station Inc.
MCTV is Matsusaka Cable-TV Station Inc. (松阪ケーブルテレビ・ステーション), the community cable operator for Matsusaka City and the surrounding Taki and Watarai districts in central Mie Prefecture. Founded in 1990 and on air since 1993, it sells cable TV, FTTH internet (up to 10 Gbps), cable telephony and MVNO mobile to households in its franchise area.
What it's used for
Residential and small-business access. The AS announces 11 IPv4 prefixes totalling 47,104 addresses plus one IPv6 /32. Every sampled address resolves in the operator's own mctv.ne.jp zone, in two subscriber-pool styles: host-218-185-160-5.mctv.ne.jp, which encodes the address into the label, and the terser f176005.mctv.ne.jp / m240005.mctv.ne.jp, where the prefix letter looks like a line-type marker and the digits are the address. Bulk per-address PTRs like these exist to name customer-premises equipment; server, backbone and management space is not named this way.
Notable
An eyeball network, and the ratio confirms it: 47k addresses against 23 observed BGP neighbours. That is an access ISP with a handful of upstreams plus local peering — a wholesale carrier holding the same space would carry an order of magnitude more adjacencies. Geolocate this space to households in central Mie, not to a data centre.
Interesting
One announced block, 194.193.96.0/19, is RIPE-region space sitting incongruously among APNIC allocations. That mismatch is worth a second look, because scattered cross-RIR /24s are a broker tell — but it is not one here: the block carries first-party reverse DNS in MCTV's own zone (host-194-193-96-5.mctv.ne.jp), which is the discriminator between a real operator with oddly-acquired legacy space and a broker announcing someone else's.
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 | 101.203.88.136 |
| JPIX Tokyo | Tokyo, Japan | 210.171.224.144 |
| BroadBand Internet eXchange Osaka | Osaka, Japan | 218.100.9.82 |
| JPIX Osaka | Osaka, Japan | 103.246.232.144 |
Transit providers
6 upstream, 0 downstream and 10 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 2026-10-10, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 11 prefixes · 47.10K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 12 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS10019- Registry name
- MCTV
- Registered
- 2000-04-27
- Last changed
- 2005-09-03
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 100% valid · 12 valid, 0 with no ROA
- ROAs
- 12 authorising AS10019
- ASPA
- no ASPA record
- IRR
- 100% registered · 12 of 12 announcements
- Route objects
- 18 naming AS10019
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 1,775 prefixes, as published 2026-10-11. 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