AS38074 — SDCC-AS-AP SDCC Japan-West Area

AS38074 announces 3 IPv4 prefixes covering 768 addresses and 15 IPv6 prefixes.

About this network

SDCC-AS-AP is operated by SDCC OpenNetwork, a Japanese educational and research network.

What it's used for

• The address space carries amateur radio digital communications and research traffic, evidenced by the AMPRNET netname and sdconw.com reverse DNS entries.
• The AS announces 768 IPv4 addresses and 15 IPv6 prefixes, maintaining 21 peering neighbours, a ratio consistent with a specialized research or educational network rather than a large-scale transit provider.
• Traffic consists of data for amateur radio experimentation, digital communications testing, and academic research projects hosted within the Shimane Data Center Club infrastructure.

Notable

• Registrants align with the announcer, including Amateur Radio Digital Communications for the 44.31.25.0/24 block and Shimane Data Center Club Administrator for the 103.152.178.0/24 and 103.160.48.0/24 blocks.
• The inventory includes a US-based prefix (44.31.25.0/24) alongside Japanese allocations, reflecting the international nature of amateur radio networks and the specific allocation for AMPRNET.

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

Announced prefixes

• 44.31.25.0/24
• 103.152.178.0/24
• 103.160.48.0/24
• 2001:df4:1780::/48
• 2406:7ec0::/36
• 2406:7ec0:1005::/48
• 2406:7ec0:1006::/48
• 2406:7ec0:100c::/46
• 2406:7ec0:1010::/44
• 2406:7ec0:1020::/43
• 2406:7ec0:1040::/42
• 2406:7ec0:1080::/41
• 2406:7ec0:1100::/40
• 2406:7ec0:1200::/39
• 2406:7ec0:1400::/38
• 2406:7ec0:1800::/37
• 2406:7ec0:2000::/35
• 2406:7ec0:4000::/34

Upstream networks

• AS150363 SoftEther Corporation
• AS63798 Industrial Cyber Security Center of Excellence
• AS59103 SoftEther Corporation

Downstream networks

• AS58790 SERVER-G Group
• AS200455 HOTARU NETWORK LTD.
• AS39753 Kai Liu
• AS49867 Shuji Ito
• AS150325 TSUKUDANI NETWORK
• AS140868 TakataSDCC Net
• AS12198 JSMSR Network
• AS38656 Loutres
• AS38646 Neodyland
• AS152873 Neodyland
• AS205603 Xinyu Wei
• AS63791 doornoc
• AS63781 Kobayashi Family Net LLP
• AS38649 The University of Electro-Communications
• AS214675 Hidenori Matsuo
• AS63800 SERVER-G Group

Adjacent networks

• AS150363 SoftEther Corporation
• AS58790 SERVER-G Group
• AS200455 HOTARU NETWORK LTD.
• AS39753 Kai Liu
• AS49867 Shuji Ito
• AS150325 TSUKUDANI NETWORK
• AS140868 TakataSDCC Net
• AS12198 JSMSR Network
• AS38656 Loutres
• AS38646 Neodyland
• AS205603 Xinyu Wei
• AS152873 Neodyland
• AS63791 doornoc
• AS63781 Kobayashi Family Net LLP
• AS63798 Industrial Cyber Security Center of Excellence
• AS59103 SoftEther Corporation
• AS38649 The University of Electro-Communications
• AS150362 Mamireimu Net Work's
• AS214675 Hidenori Matsuo
• AS63800 SERVER-G Group