asn.dev

Autonomous system

AS131958 T-NET Tama Cable Network Co.,Ltd.

Residential APNIC

IPv4 addresses 26.11K 6 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly JP
Exchanges 12 recorded by PCH
Upstreams 29 0 downstream
Flagged prefixes 0 none

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

Recorded at 12 exchanges in 8 countries, largest first.

ExchangeLocationTheir address
DE-CIX FrankfurtFrankfurt, Germany80.81.195.149
LINX LON1London, United Kingdom195.66.228.65
AMS-IX AmsterdamAmsterdam, Netherlands80.249.213.157
BroadBand Internet eXchange TokyoTokyo, Japan101.203.89.95
Coresite - Any2 WestLos Angeles, United States206.72.211.41
Any2 CaliforniaLos Angeles, United States206.72.211.41
JPIX TokyoTokyo, Japan210.171.225.82
BroadBand Internet eXchange SingaporeSingapore, Singapore103.231.152.36

Transit providers

29 upstream, 0 downstream and 42 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS2497Internet Initiative Japan Inc.158
AS6939Hurricane Electric LLC55
AS34549meerfarbig GmbH & Co. KG25
AS2519ARTERIA Networks Corporation15
AS50304Blix Solutions AS12
AS1836green.ch AG7
AS3333Reseaux IP Europeens Network Coordination Centre (RIPE NCC)7
AS17639Converge ICT Solutions Inc.7

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

Shape and geography

IPv4 6 prefixes · 26.11K addresses IPv6 1 prefixes

CountryNamePrefixes
JPJapan7

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS131958
Registry name
t-net
Registered
2011-08-04
Last changed
2019-10-25
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 7 valid, 0 with no ROA
ROAs
8 authorising AS131958
ASPA
no ASPA record
IRR
14% registered · 1 of 7 announcements
Route objects
1 naming AS131958

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

Cross-check