asn.dev

Autonomous system

AS23561 YONGINUNIVERSITY-AS-KR Yongin University

Unclassified ARIN

IPv4 addresses 3.58K 6 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly KR
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Yongin University

Korea, Republic of · AI-generated

education university korea

The AS handle YONGINUNIVERSITY-AS-KR is held by Yongin University.

What it's used for

  • The address space is registered under the netname KREN-KR with registrant IRT-KRNIC-KR, indicating allocation through the Korea Internet & Security Agency.
  • The AS announces 3584 IPv4 addresses across 6 prefixes, with a single observed neighbour, a ratio consistent with an isolated institutional network rather than a transit provider.

Notable

  • All six announced prefixes share the same registrant IRT-KRNIC-KR and netname KREN-KR, which aligns with the university's identity as the announcer.
  • The inventory consists of one /22 block (210.119.136.0/22) and five smaller blocks within the 220.66.60.0/22 range, reflecting a segmented internal corporate estate.

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
AS9318SK Broadband Co Ltd854

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, 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 6 prefixes · 3.58K addresses IPv6 0 prefixes

CountryNamePrefixes
KRKorea, Republic of6

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS23561
Registry name
YONGINUNIVERSITY-AS-KR-KR
Abuse contact
hostmaster@nic.or.kr
Registered
2002-12-24
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 14 with no ROA
ROAs
0 authorising AS23561
ASPA
no ASPA record
IRR
100% registered · 14 of 14 announcements
Route objects
14 naming AS23561

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: 445 networks and 1,817 prefixes, as published 2026-10-27. 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