asn.dev

Autonomous system

AS2523 ITRC-NET Internet Technology Research Consortium

Unclassified APNIC

IPv4 addresses 61.94K 18 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly JP
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 5 see address space

Summary

Internet Technology Research Consortium (ITRC)

Japan · AI-generated

education research legacy

ITRC-NET is the Internet Technology Research Consortium, a Japanese research grouping working on internet and networking technology.

What it's used for

  • Networking for a research consortium: a small footprint of a few prefixes announced under JPNIC/APNIC.

Notable

  • A research/academic-oriented network rather than a commercial ISP or host.

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

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

ASNetworkPaths seen
AS2907Research Organization of Information and Systems, National Institute of Informatics219

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, 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 18 prefixes · 61.94K addresses IPv6 1 prefixes

CountryNamePrefixes
JPJapan19

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS2523
Registry name
ITRC-NET
Abuse contact
hostmaster@nic.ad.jp
Registered
2002-04-05
Last changed
2023-05-12
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 4 with no ROA
ROAs
0 authorising AS2523
ASPA
no ASPA record
IRR
0% registered · 0 of 4 announcements
Route objects
0 naming AS2523

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: 442 networks and 1,771 prefixes, as published 2026-10-15. 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