AS24255 — T-CATV Koshinomiyako Network, Inc.

Network type: residential

AS24255 announces 7 IPv4 prefixes covering 27,648 addresses and 1 IPv6 prefixes.

About this network

The AS handle T-CATV is held by Koshinomiyako Network, Inc.

What it's used for

• The address space carries residential cable and DSL traffic, evidenced by reverse DNS entries like ttn64-33-47-254.ttn.ne.jp and netnames such as TTN and T-CATV-CIDR-BLK-JP.
• The network announces 27,648 IPv4 addresses across 7 prefixes and 1 IPv6 prefix, while maintaining 21 observed neighbours; this ratio of address space to peering partners indicates an access or eyeball network rather than a transit provider.

Notable

• Registrants for all announced prefixes are listed as Japan Network Information Center with IRT-JPNIC-JP, which is consistent with the Japanese registry structure for this operator.
• The inventory consists of a mix of /18, /20, /21, and /22 blocks, including the large 64.33.0.0/18 range, suggesting a consolidated but varied address estate.

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

Announced prefixes

• 61.245.112.0/21
• 64.33.0.0/18
• 103.198.212.0/22
• 182.50.164.0/22
• 202.88.192.0/21
• 202.127.80.0/20
• 219.100.184.0/22
• 2405:5300::/32

Upstream networks

• AS2497 Internet Initiative Japan Inc.
• AS6939 Hurricane Electric LLC
• AS9824 JCOM Co., Ltd.
• AS2518 BIGLOBE Inc.
• AS17676 SoftBank Corp.
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS
• AS8966 EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC
• AS20485 Joint Stock Company TransTeleCom

Adjacent networks

• AS2497 Internet Initiative Japan Inc.
• AS6939 Hurricane Electric LLC
• AS9824 JCOM Co., Ltd.
• AS2518 BIGLOBE Inc.
• AS17676 SoftBank Corp.
• AS24482 SG.GS
• AS17639 Converge ICT Solutions Inc.
• AS8966 EMIRATES TELECOMMUNICATIONS GROUP COMPANY (ETISALAT GROUP) PJSC
• AS20485 Joint Stock Company TransTeleCom

Internet exchanges

• BroadBand Internet eXchange Tokyo — Tokyo, Japan
• JPIX Tokyo — Tokyo, Japan
• BroadBand Internet eXchange Osaka — Osaka, Japan
• JPIX Osaka — Osaka, Japan