AS18094 — TCN-AS Tokyo Cable Network.,INC

Network type: residential

AS18094 announces 6 IPv4 prefixes covering 22,016 addresses and 0 IPv6 prefixes.

About this network

TCN-AS is operated by Tokyo Cable Network, a regional cable television and internet service provider in Japan.

What it's used for

• The address space carries residential customer traffic, evidenced by reverse DNS entries like tcn044000.tcn-catv.ne.jp and netnames such as TCN-FTTH-NET and TCN-UBR-NET.
• The AS announces 22,016 IPv4 addresses across 6 prefixes and maintains 15 observed neighbours, a ratio consistent with an access network serving end-users rather than a transit provider.

Notable

• All registrants for the announced prefixes are listed as Japan Network Information Center (JPNIC), which is standard for Japanese IP allocations and aligns with the announcer's identity.
• The inventory consists of six IPv4 blocks with no IPv6 prefixes, reflecting a legacy or IPv4-centric deployment typical of older cable infrastructure.

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

Announced prefixes

• 103.15.92.0/23
• 123.200.32.0/19
• 133.117.80.0/20
• 175.111.92.0/22
• 219.109.192.0/20
• 219.118.112.0/20

Upstream networks

• AS2497 Internet Initiative Japan Inc.
• AS6939 Hurricane Electric LLC
• AS17676 SoftBank Corp.
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS
• AS20485 Joint Stock Company TransTeleCom

Adjacent networks

• AS2497 Internet Initiative Japan Inc.
• AS6939 Hurricane Electric LLC
• AS17676 SoftBank Corp.
• AS24482 SG.GS
• AS20485 Joint Stock Company TransTeleCom
• AS17639 Converge ICT Solutions Inc.

Routing security

• RPKI: 6 valid, 0 invalid and 0 not-found announcements; 6 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 0 route objects.
• Listed in as-sets: AS-BBIX-T, AS-IIJ, AS2497:AS-IIJ.

Internet exchanges

• BroadBand Internet eXchange Tokyo — Tokyo, Japan