AS23783 — CNA Cable Networks Akita Co.,ltd.

Network type: residential

AS23783 announces 16 IPv4 prefixes covering 50,944 addresses and 1 IPv6 prefixes.

About this network

CNA is the AS handle for Cable Networks Akita Co.,ltd., a regional cable operator in Japan.

What it's used for

• The address space carries residential and business access traffic, evidenced by reverse DNS entries like d193-116-55-254.cna.ne.jp and netnames such as CNA-CIDR-BLK-JP and PREF-AKITA-CIDR-BLK-JP.
• With 50944 IPv4 addresses announced across 16 prefixes and 24 observed neighbours, the ratio suggests an access network serving a specific geographic region rather than a transit provider.

Notable

• Registrants for all sampled prefixes are Japan Network Information Center (JPNIC), consistent with the announcer's identity as a Japanese ISP.
• The inventory includes a mix of netnames, including AKITECHNET-CIDR-BLK-JP, indicating the operator manages or has inherited space associated with Akita Prefecture infrastructure.
• The address inventory is subdivided into multiple blocks, including a large /18 and several /20s and /22s, reflecting a structured allocation for a regional service provider.

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

Announced prefixes

• 27.110.96.0/20
• 27.110.112.0/21
• 61.11.128.0/18
• 61.11.192.0/20
• 103.54.204.0/22
• 193.116.32.0/19
• 202.236.116.0/24
• 202.240.66.0/23
• 203.179.244.0/23
• 203.179.248.0/23
• 203.179.252.0/22
• 210.143.122.0/23
• 218.185.128.0/19
• 219.124.98.0/23
• 219.124.100.0/22
• 219.124.104.0/21
• 2403:5a00::/32

Upstream networks

• AS2497 Internet Initiative Japan Inc.
• AS2516 KDDI CORPORATION
• AS6939 Hurricane Electric LLC
• AS2518 BIGLOBE Inc.
• AS17676 SoftBank Corp.
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS
• AS20485 Joint Stock Company TransTeleCom

Downstream networks

• AS18266 Cable Networks Akita Co.,ltd.
• AS131953 NPO Yutopianet

Adjacent networks

• AS2497 Internet Initiative Japan Inc.
• AS2516 KDDI CORPORATION
• AS18266 Cable Networks Akita Co.,ltd.
• AS6939 Hurricane Electric LLC
• AS131953 NPO Yutopianet
• AS2518 BIGLOBE Inc.
• AS17676 SoftBank Corp.
• AS24482 SG.GS
• AS17639 Converge ICT Solutions Inc.
• AS20485 Joint Stock Company TransTeleCom

Internet exchanges

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