AS18135 — BTV BTV CO.,LTD.

Network type: residential

AS18135 announces 9 IPv4 prefixes covering 38,912 addresses and 1 IPv6 prefixes.

About this network

The AS handle BTV is held by BTV Co., Ltd., a Japanese cable and DSL internet service provider.

What it's used for

• The address space carries residential customer traffic, evidenced by netnames such as BTV-DHCP-NET and reverse DNS entries pointing to btvm.ne.jp.
• With 38,912 IPv4 addresses announced across 9 prefixes and 15 observed neighbours, the ratio indicates an access network serving end-users rather than a transit provider.

Notable

• Registrants for the majority of prefixes are listed as Japan Network Information Center; IRT-JPNIC-JP, which is standard for Japanese allocations, while one prefix (163.131.104.0/21) carries the netname IIJ-CIDR-BLK-JP.
• The inventory consists of a mix of larger blocks like 42.83.0.0/18 and smaller /21 and /22 allocations, all located in Japan.

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

Announced prefixes

• 42.83.0.0/18
• 103.205.48.0/22
• 153.124.224.0/21
• 163.131.104.0/21
• 182.23.216.0/21
• 203.211.32.0/20
• 203.211.48.0/21
• 219.100.88.0/22
• 219.103.0.0/19
• 2401:d500::/32

Upstream networks

• AS2497 Internet Initiative Japan Inc.
• AS6939 Hurricane Electric LLC
• AS17676 SoftBank Corp.
• AS2519 ARTERIA Networks Corporation
• AS24482 SG.GS
• AS9002 RETN Limited

Adjacent networks

• AS2497 Internet Initiative Japan Inc.
• AS6939 Hurricane Electric LLC
• AS17676 SoftBank Corp.
• AS2519 ARTERIA Networks Corporation
• AS24482 SG.GS
• AS9002 RETN Limited

Internet exchanges

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