AS59127 — NCV - Newmedia Corporation

Network type: residential

AS59127 announces 12 IPv4 prefixes covering 63,488 addresses and 1 IPv6 prefixes.

About this network

NCV is the AS handle for Newmedia Corporation, a Japanese cable and DSL internet service provider.

What it's used for

• The address space carries residential and business subscriber traffic, evidenced by reverse DNS names such as omn.ne.jp and ncv.co.jp, and netnames including NCV-NET, TULIPNET, and OMN-NET.
• The AS announces 63,488 IPv4 addresses across 12 prefixes and 1 IPv6 prefix, while maintaining 14 observed neighbours; this ratio of substantial address space to a moderate number of peers indicates an access network providing connectivity to end-users rather than a transit provider.
• Traffic from this AS consists of subscriber eyeballs accessing the internet via cable and DSL connections, consistent with the operator's business as a regional ISP in Japan.

Notable

• All registrants for the announced prefixes are listed as Japan Network Information Center (JPNIC) with the IRT contact IRT-JPNIC-JP, which is standard for Japanese address space allocation and does not indicate a mismatch with the announcer.
• The address inventory is fragmented across multiple netnames, including NCV-CIDR-BLK-JP, NCV-NET, TULIPNET, and OMN-NET, suggesting the aggregation of address blocks from different historical acquisitions or service brands under the Newmedia Corporation umbrella.

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

Announced prefixes

• 61.44.128.0/18
• 101.203.0.0/19
• 101.203.32.0/20
• 113.197.40.0/21
• 113.213.192.0/19
• 113.213.224.0/20
• 116.199.240.0/20
• 122.200.136.0/21
• 180.92.16.0/20
• 180.148.144.0/21
• 216.171.112.0/20
• 223.223.240.0/20
• 2401:7ec0::/32

Upstream networks

• AS17676 SoftBank Corp.
• AS6939 Hurricane Electric LLC
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS
• AS20485 Joint Stock Company TransTeleCom

Adjacent networks

• AS17676 SoftBank Corp.
• AS6939 Hurricane Electric LLC
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS
• AS20485 Joint Stock Company TransTeleCom

Routing security

• RPKI: 21 valid, 0 invalid and 0 not-found announcements; 34 ROAs.
• ASPA: none published.
• IRR: 0% of announcements registered; 0 route objects.
• Listed in as-sets: AS-GIGAINFRA, AS-GIGAINFRA-V6, AS146984:AS-JPNAP-EAST-CUSTOMER.

Internet exchanges

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