Autonomous system
AS9274 PUSAN-AS-KR Pusan National University
Education APNIC
Summary
Pusan National University
education university research legacy
AS9274 (PUSAN-AS-KR) is held by Pusan National University, one of South Korea's ten flagship national universities, based in Busan. It is the university's own campus network: a single institution routing its own address space, with no commercial or transit function.
What it's used for
Almost the entire footprint is one legacy /16-worth of space, 164.125.0.0/16, announced as a set of covering prefixes — two /18s, three /19s, two /20s and a scattering of /22s and /24s — plus a 203.232.240.0/21. Together that is 15 IPv4 prefixes and roughly 67,584 addresses, with no IPv6 announced and just one observed BGP neighbour. That single upstream is the strongest signal in the pack: a network with one path to the outside world is by definition an end site, not a provider. The generous address holding (a legacy 164.125/16 class-B-era block) reflects when the network was registered rather than how many devices it has today; Korean flagship national universities were early adopters of the internet and hold correspondingly large blocks. The deaggregation into /18s and /19s is internal campus structure being announced, not customer assignment.
Notable
- The university operates across several campuses — the main Busan campus in Geumjeong-gu, plus Ami, Miryang and Yangsan — and one AS covers the lot.
- No IPv6 is announced at all, which is worth knowing if you expect a research-and-education network to be dual-stacked.
- Traffic from
164.125.0.0/16is institutional: staff, students, labs and university-run services. It is not a hosting network, despite the size of the block.
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
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.
| AS | Network | Paths seen |
|---|---|---|
| AS3786 | LG DACOM Corporation | 900 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 4 prefixes · 67.33K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| KR | Korea, Republic of | 4 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS9274- Registry name
- PUSAN-AS-KR-KR
- Abuse contact
- hostmaster@nic.or.kr
- Registered
- 1998-01-22
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 15 with no ROA
- ROAs
- 0 authorising AS9274
- ASPA
- no ASPA record
- IRR
- 100% registered · 15 of 15 announcements
- Route objects
- 16 naming AS9274
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: 442 networks and 1,783 prefixes, as published 2026-10-17. 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