AS2505 — HEPNET-J High Energy Accelerator Research Organization, KEK

Network type: education

AS2505 announces 4 IPv4 prefixes covering 74,240 addresses and 0 IPv6 prefixes.

About this network

HEPNET-J is operated by KEK, the High Energy Accelerator Research Organization, a Japanese national research institute for particle and accelerator physics in Tsukuba.

What it's used for

• Networking for high-energy physics research (HEPNET-J, the High Energy Physics Network for Japan), connecting KEK and collaborating institutions.

Notable

• A national research-laboratory network, not a commercial ISP. The low AS number reflects an early Japanese-internet allocation tied to the physics research community.

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

Announced prefixes

• 130.87.0.0/16
• 192.153.112.0/24
• 192.153.114.0/24
• 202.13.192.0/19

Upstream networks

• AS2907 Research Organization of Information and Systems, National Institute of Informatics

Adjacent networks

• AS2907 Research Organization of Information and Systems, National Institute of Informatics