AS18070 — NDAC Global Network Core Co.,Ltd.

Network type: residential

AS18070 announces 7 IPv4 prefixes covering 13,056 addresses and 14 IPv6 prefixes.

About this network

The AS handle NDAC is held by Global Network Core Co.,Ltd., a Japanese cable and DSL internet service provider.

What it's used for

• The address space carries residential and business access traffic, evidenced by reverse DNS entries pointing to nplus-net.jp, such as 210-158-171-254.nplus-net.jp and e5fw4344.nplus-net.jp.
• The network announces 13056 IPv4 addresses across 7 prefixes and 16 IPv6 prefixes, while maintaining 15 observed neighbours; this ratio of address volume to peering partners indicates an access or eyeball network rather than a transit provider.

Notable

• All registrants for the announced prefixes are listed as Japan Network Information Center with IRT-JPNIC-JP, which is consistent with the holder's identity as a Japanese ISP.
• The address inventory consists of a mix of /20, /21, /22, /23, and /24 blocks, including the large 210.158.160.0/20 and 218.223.32.0/20 ranges, alongside smaller subdivisions in the 117.102.0.0/16 space.

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

Announced prefixes

• 103.215.84.0/22
• 117.102.168.0/24
• 117.102.170.0/23
• 117.102.172.0/22
• 210.158.160.0/20
• 218.223.32.0/20
• 221.120.168.0/21
• 2400:e000::/39
• 2400:e000:106::/47
• 2400:e000:108::/45
• 2400:e000:110::/44
• 2400:e000:120::/43
• 2400:e000:140::/42
• 2400:e000:180::/41
• 2400:e000:200::/39
• 2400:e000:400::/38
• 2400:e000:800::/37
• 2400:e000:1000::/36
• 2400:e000:2000::/35
• 2400:e000:4000::/34
• 2400:e000:8000::/33

Upstream networks

• AS2914 NTT America, Inc.
• AS2518 BIGLOBE Inc.
• AS6939 Hurricane Electric LLC
• AS24482 SG.GS
• AS38001 NewMedia Express Pte Ltd

Downstream networks

• AS23631 Sofu System, Inc
• AS55895 N.S.Computer Service Co.,Ltd.
• AS38652 Ginzado Co.,Ltd.

Adjacent networks

• AS2914 NTT America, Inc.
• AS2518 BIGLOBE Inc.
• AS23631 Sofu System, Inc
• AS55895 N.S.Computer Service Co.,Ltd.
• AS6939 Hurricane Electric LLC
• AS38652 Ginzado Co.,Ltd.
• AS24482 SG.GS
• AS38001 NewMedia Express Pte Ltd

Internet exchanges

• JPIX Tokyo — Tokyo, Japan
• Echigo Internet Exchange — Niigata, Japan