asn.dev

Autonomous system

AS55618 UOU-AS-KR UNIVERSITY OF ULSAN

Unclassified ARIN

IPv4 addresses 16.90K 7 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

University of Ulsan

Korea, Republic of · AI-generated

education university korea

UOU-AS-KR is operated by University of Ulsan.

What it's used for

  • The address space is registered under netnames KREN-KR and KORNET-KR with registrant IRT-KRNIC-KR, indicating allocation through the Korea Internet & Security Agency.
  • The AS announces 16,896 IPv4 addresses across 7 prefixes and maintains a single observed neighbour, a ratio characteristic of an isolated institutional network rather than a transit provider.
  • Traffic consists of campus network usage for students, faculty, and staff at the University of Ulsan, a private institution in Ulsan, South Korea.

Notable

  • Registrants for all announced prefixes are IRT-KRNIC-KR, consistent with the national registry allocation for the university.
  • The inventory comprises six prefixes in the 210.102.0.0/16 range and one in 203.250.0.0/16, with no IPv6 prefixes currently announced.
  • The AS has been visible in routing tables since 2011.

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
AS4766Korea Telecom4,101

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 7 prefixes · 16.90K addresses IPv6 0 prefixes

CountryNamePrefixes
KRKorea, Republic of7

Registry

Allocation record

ARIN · via Atlas (registry + RDAP)
Registry
ARIN
Handle
AS55618
Registry name
UOU-AS-KR-KR
Abuse contact
hostmaster@nic.or.kr
Registered
2010-07-21
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 75 with no ROA
ROAs
0 authorising AS55618
ASPA
no ASPA record
IRR
100% registered · 75 of 75 announcements
Route objects
76 naming AS55618

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: 440 networks and 1,773 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