Autonomous system
AS18135 BTV BTV CO.,LTD.
Residential APNIC
Summary
BTV Co., Ltd.
isp residential cable japan
The AS handle BTV is held by BTV Co., Ltd., a Japanese cable and DSL internet service provider.
What it's used for
- The address space carries residential customer traffic, evidenced by netnames such as
BTV-DHCP-NETand reverse DNS entries pointing tobtvm.ne.jp. - With 38,912 IPv4 addresses announced across 9 prefixes and 15 observed neighbours, the ratio indicates an access network serving end-users rather than a transit provider.
Notable
- Registrants for the majority of prefixes are listed as Japan Network Information Center; IRT-JPNIC-JP, which is standard for Japanese allocations, while one prefix (
163.131.104.0/21) carries the netnameIIJ-CIDR-BLK-JP. - The inventory consists of a mix of larger blocks like
42.83.0.0/18and smaller /21 and /22 allocations, all located in Japan.
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 | 101.203.88.103 |
| JPIX Tokyo | Tokyo, Japan | 210.171.224.154 |
| BroadBand Internet eXchange Osaka | Osaka, Japan | 218.100.9.148 |
| JPIX Osaka | Osaka, Japan | 103.246.232.154 |
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 9 prefixes · 38.91K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| JP | Japan | 10 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS18135- Registry name
- BTV
- Abuse contact
- hostmaster@nic.ad.jp
- Registered
- 2002-03-21
- Last changed
- 2023-08-17
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 82% valid · 9 valid, 2 with no ROA
- ROAs
- 9 authorising AS18135
- ASPA
- no ASPA record
- IRR
- 18% registered · 2 of 11 announcements
- Route objects
- 2 naming AS18135
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