AS7513 — SHIELD Hitachi Systems, Ltd.

AS7513 announces 2 IPv4 prefixes covering 2,048 addresses and 0 IPv6 prefixes.

About this network

SHIELD — the network of Hitachi Systems, Ltd. that carries SHIELD, the company's cybersecurity brand: managed security services, a security operations centre, vulnerability assessment and incident response for Japanese enterprises.

What it's used for

• Delivering Hitachi Systems' SHIELD managed-security services — the monitoring, DNS and service hosts sit here (rDNS resolves under shield.ne.jp, e.g. dns-i03.shield.ne.jp).
• Publishing the SHIELD Security Research Center's advisories and research.

Notable

• Small and purpose-built: roughly 2,000 IPv4 addresses in a handful of /24s, all registered to Hitachi Systems under the SHIELD netname. There are no subscriber pools and very little rDNS — a service network, not an ISP or a public cloud.
• The name is honest here, which is worth saying because it usually isn't: SHIELD really is a security service, not a coincidental brand reused for something else.
• Part of the space (103.130.232.0/22) sits inside a block registered to a third party, with the individual /24s sub-registered to Hitachi Systems under the same SHIELD netname — normal sub-allocation, not brokered address space.

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

Announced prefixes

• 103.130.232.0/22
• 202.223.16.0/22

Upstream networks

• AS2914 NTT America, Inc.
• AS4713 NTT DOCOMO BUSINESS,Inc.

Adjacent networks

• AS2914 NTT America, Inc.
• AS4713 NTT DOCOMO BUSINESS,Inc.