Autonomous system
AS9488 SNU-AS-KR Seoul National University
Education ARIN
Summary
Seoul National University
education university research legacy
AS9488 (SNU-AS-KR) is held by Seoul National University, South Korea's flagship national research university, whose main campus is in Gwanak-gu, Seoul. The routing evidence lines up exactly with the registry: the space is 147.46.0.0/16 and 147.47.0.0/16, and the sampled reverse DNS resolves under the university's own snu.kr domain.
What it's used for
The AS originates 20 IPv4 prefixes covering 131,072 addresses — two adjacent legacy /16s and eighteen more-specifics carved out of them, mostly /19s with a couple of /24s. That deaggregation pattern is a self-managed campus doing traffic engineering across its own upstreams: the /16 aggregates cover everything, and the /19s let individual campus segments prefer a particular exit path.
Only 4 observed BGP neighbours. That number is the interpretive key here. 131k addresses would be a substantial network for a commercial ISP, and an ISP that size would peer with dozens or hundreds of others; SNU peers with a handful. The address count is a legacy artefact — a pair of class-B blocks issued to a national university early — not evidence of a wholesale role. The AS carries the university's own users, labs, libraries, hospital-adjacent research systems and public web presence, taking transit from Korea's research-and-education upstream rather than buying commercial IP transit at scale.
Notable
- Two contiguous /16s (
147.46/16+147.47/16= a de facto /15) is a very large holding for one institution and reflects an early, pre-scarcity allocation. - No IPv6 prefix is announced, which stands out for a research university of this profile.
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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-15, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 20 prefixes · 129K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| KR | Korea, Republic of | 20 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS9488- Registry name
- SNU-AS-KR-KR
- Abuse contact
- hostmaster@nic.or.kr
- Registered
- 1999-02-22
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 20 with no ROA
- ROAs
- 0 authorising AS9488
- ASPA
- no ASPA record
- IRR
- 100% registered · 20 of 20 announcements
- Route objects
- 14 naming AS9488
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 1,781 prefixes, as published 2026-10-16. 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