AS9488 — SNU-AS-KR Seoul National University
Network type: education
AS9488 announces 6 IPv4 prefixes covering 129,024 addresses and 0 IPv6 prefixes.
About this network
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.
Announced prefixes
- 147.46.0.0/16
- 147.47.0.0/18
- 147.47.64.0/19
- 147.47.96.0/20
- 147.47.112.0/21
- 147.47.128.0/17
Upstream networks
Adjacent networks
awaiting query
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