AS55381 — CCSNET - CITY-CABLE SHUNAN Corporation

Network type: residential

AS55381 announces 7 IPv4 prefixes covering 17,920 addresses and 0 IPv6 prefixes.

About this network

CCSNET is the AS handle for City Cable Shunan Corporation, a regional cable operator in Yamaguchi Prefecture.

What it's used for

• The address space carries residential cable broadband traffic, evidenced by reverse DNS records pointing to ccsnet.ne.jp and netnames like CCSNET and CCSNET-CIDR-BLK-JP.
• The AS announces 17,920 IPv4 addresses across 7 prefixes and maintains 6 observed routing neighbours, a ratio consistent with an access network serving local subscribers rather than a transit provider.
• Traffic from this AS consists of subscriber eyeballs accessing the internet via cable infrastructure in the Shunan area.

Notable

• All registrants for the announced prefixes are listed as Japan Network Information Center with the IRT contact IRT-JPNIC-JP, which is standard for Japanese ISP allocations and aligns with the announcer.
• The address inventory is composed of seven distinct IPv4 blocks, including a /19 and a /20, with no IPv6 prefixes currently in the inventory.

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

Announced prefixes

• 103.125.124.0/22
• 116.193.224.0/19
• 122.152.56.0/21
• 126.251.40.0/22
• 126.251.44.0/23
• 218.231.192.0/20
• 218.231.208.0/22

Upstream networks

• AS7670 Enecom,Inc.
• AS6939 Hurricane Electric LLC
• AS2914 NTT America, Inc.
• AS17676 SoftBank Corp.
• AS35280 F5 Networks SARL

Adjacent networks

• AS7670 Enecom,Inc.
• AS6939 Hurricane Electric LLC
• AS2914 NTT America, Inc.
• AS17676 SoftBank Corp.
• AS35280 F5 Networks SARL

Routing security

• RPKI: 0 valid, 0 invalid and 18 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 11% of announcements registered; 2 route objects.
• Listed in as-sets: AS-CCCN, AS-GIGAINFRA, AS-IIJ, AS-IIJ6, AS-KDD, AS-KDDCUSTOMER2, AS-OCN, AS-OCN, AS-PACNET-DOWNSTREAM-JP, AS-TELSTRA-INTL-CUSTOMERS, AS-UCOM, AS-USEN, AS-VECTANT, AS131976:AS-JPNAP-WEST-CUSTOMER, AS2497:AS-IIJ, AS2497:AS-IIJ6, AS2914:AS-ASIA.

Internet exchanges

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