asn.dev

Autonomous system

AS7513 SHIELD Hitachi Systems, Ltd.

Unclassified RIPE

IPv4 addresses 2.05K 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly JP
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Hitachi Systems (SHIELD)

Japan · AI-generated

enterprise legacy

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. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS2914NTT America, Inc.472
AS4713NTT DOCOMO BUSINESS,Inc.236

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 2 prefixes · 2.05K addresses IPv6 0 prefixes

CountryNamePrefixes
JPJapan2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS7513
Registry name
SHIELD
Abuse contact
hostmaster@nic.ad.jp
Registered
1997-03-03
Last changed
2019-04-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 12 with no ROA
ROAs
0 authorising AS7513
ASPA
no ASPA record
IRR
100% registered · 12 of 12 announcements
Route objects
12 naming AS7513

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 436 networks and 1,771 prefixes, as published 2026-10-13. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check