asn.dev

Autonomous system

AS3784 POSTECH-AS-KR Pohang University of Science and Technology

Education RIPE

IPv4 addresses 65.79K 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly KR
Exchanges 0 recorded by PCH
Upstreams 3 0 downstream
Flagged prefixes 0 none

Summary

Pohang University of Science and Technology (POSTECH)

South Korea · AI-generated

education research legacy

POSTECH-AS-KR is the campus network of the Pohang University of Science and Technology, a research university in Pohang, North Gyeongsang Province, South Korea.

What it's used for

  • Campus, dormitory, and administrative networking for POSTECH students, staff, and faculty.
  • Research computing and connectivity to Korea's national research and education networks.

Notable

  • The AS announces roughly a /16 worth of IPv4 space (about 65,000 addresses), a typical institutional allocation rather than a commercial ISP footprint.
  • POSTECH is a research-intensive science and engineering university and hosts large-scale scientific facilities, so a chunk of the traffic here is academic rather than general web browsing.

Interesting

  • POSTECH sits in the same low-3000s ASN neighbourhood as several other Korean universities that connected early, such as AS3813 (Sogang University).

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

3 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS4766Korea Telecom184
AS1237KISTI101
AS3786LG DACOM Corporation53

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, 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 · 65.79K addresses IPv6 0 prefixes

CountryNamePrefixes
KRKorea, Republic of2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS3784
Registry name
POSTECH-AS-KR-KR
Abuse contact
hostmaster@nic.or.kr
Registered
2002-08-01
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 5 with no ROA
ROAs
0 authorising AS3784
ASPA
no ASPA record
IRR
80% registered · 4 of 5 announcements
Route objects
4 naming AS3784

Reputation

Classification and threat

Education University, school or national research and education network.

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: 446 networks and 1,852 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