AS23808 — TOSHIMA-NET TOSHIMA CABLE NETWORK CO.,LTD

AS23808 announces 4 IPv4 prefixes covering 14,336 addresses and 0 IPv6 prefixes.

About this network

The AS handle TOSHIMA-NET is operated by Toshima Cable Network Co., Ltd.

What it's used for

• The address space carries residential cable access traffic, evidenced by reverse DNS entries such as gs215-254.toshima.ne.jp and gs107-254.toshima.ne.jp.
• The network announces 14336 IPv4 addresses across 4 prefixes and maintains a single observed neighbour, a ratio characteristic of an access or eyeball network rather than a transit provider.

Notable

• All four announced prefixes share the netname Toshima-Network-CIDR-BLK-JP with registrants listed as Japan Network Information Center and IRT-JPNIC-JP, aligning with the AS holder.
• The address inventory consists of four distinct IPv4 blocks, including a /19 and a /20, with no IPv6 prefixes currently in inventory.

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

Announced prefixes

• 103.40.128.0/22
• 202.140.192.0/19
• 219.100.132.0/22
• 220.152.96.0/20

Upstream networks

• AS9824 JCOM Co., Ltd.

Adjacent networks

• AS9824 JCOM Co., Ltd.