asn.dev

Autonomous system

AS58652 KOCHI-U-NET Kochi University

Unclassified ARIN

IPv4 addresses 65.54K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly JP
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Kochi University

Japan · AI-generated

education university japan

KOCHI-U-NET is operated by Kochi University.

What it's used for

  • The address space carries university network traffic, identified by the netname JPNIC-NET-JP-ERX and registrant Japan Network Information Center.
  • The AS announces 65536 IPv4 addresses across 1 prefix (133.97.0.0/16) with 1 observed neighbour, indicating a single-site institutional network rather than a transit or multi-site access provider.
  • Traffic consists of academic research, administrative, and student network usage typical of a national university in Japan.

Notable

  • The registrant Japan Network Information Center (JPNIC) is the national registry for Japan, consistent with the announcer being a Japanese institution.
  • Kochi University is one of Japan's 86 national universities, located in Kōchi Prefecture on the island of Shikoku.
  • The inventory consists of a single /16 block with no IPv6 prefixes announced.

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 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS2907Research Organization of Information and Systems, National Institute of Informatics310

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, 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 1 prefixes · 65.54K addresses IPv6 0 prefixes

CountryNamePrefixes
JPJapan1

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS58652
Registry name
Kochi-U-NET
Abuse contact
hostmaster@nic.ad.jp
Registered
2012-07-13
Last changed
2018-08-15
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 5 with no ROA
ROAs
0 authorising AS58652
ASPA
no ASPA record
IRR
0% registered · 0 of 5 announcements
Route objects
0 naming AS58652

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 1,784 prefixes, as published 2026-10-19. 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