AS7676 — TAM TAM-Internet Service T.A.M Co., Ltd.

Network type: residential

AS7676 announces 23 IPv4 prefixes covering 39,680 addresses and 3 IPv6 prefixes.

About this network

TAM is T.A.M Co., Ltd., a cable-television and internet operator based in Kamiichi, Toyama Prefecture. It runs its own ISP under the Tamnet name and provides internet service for cable-TV networks in the surrounding Namerikawa, Kamiichi and Tateyama area.

What it's used for

• Roughly 40,000 addresses across twenty-three prefixes, plus three IPv6 /32 blocks.
• Reverse DNS is cable-subscriber addressing almost everywhere, on several regional cable brands at once: pc.NNN.NNN.NNN.NNN.nice-tv.jp, cNbNN-NNN.net3-tv.net and pc-NNN-NNN-NN-NN.milale.ne.jp. The pc. prefix on customer-premises equipment is about as unambiguous an eyeball signal as reverse DNS gets.
• The company also sells IP telephony and operates as a mobile virtual network operator.

Notable

• A residential network, and a genuinely small-town one. The name gives away nothing; the rDNS gives away everything. Addresses here should geolocate to towns in Toyama Prefecture, not to a corporate headquarters.
• Watch the address count: 40,000 addresses across twenty-three prefixes is a lot of blocks for a rural cable operator, because it aggregates the space of several separate community cable networks.

Interesting

• The Net3 cable business was a public-sector broadcaster until 2021, when T.A.M acquired its assets outright and privatised it — a late example of a Japanese municipal cable-TV association being handed to a commercial operator.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 103.174.60.0/23
• 103.174.142.0/23
• 112.140.168.0/21
• 157.14.20.0/22
• 157.14.56.0/21
• 157.14.82.0/23
• 157.14.84.0/22
• 157.14.88.0/21
• 157.14.216.0/21
• 202.55.112.0/20
• 202.80.152.0/21
• 202.241.132.0/22
• 202.241.140.0/23
• 202.241.142.0/24
• 202.241.156.0/24
• 202.241.158.0/23
• 202.241.176.0/24
• 202.241.178.0/23
• 203.210.88.0/22
• 210.133.160.0/19
• 210.155.224.0/22
• 219.121.208.0/20
• 219.122.80.0/20
• 2400:12e0::/32
• 2400:3aa0::/32
• 2407:fc40::/32

Upstream networks

• AS2497 Internet Initiative Japan Inc.
• AS6939 Hurricane Electric LLC
• AS38001 NewMedia Express Pte Ltd
• AS24482 SG.GS

Adjacent networks

• AS2497 Internet Initiative Japan Inc.
• AS6939 Hurricane Electric LLC
• AS24482 SG.GS
• AS38001 NewMedia Express Pte Ltd