AS9778 DAEJIN-AS DAEJIN UNIVERSITY

AS9778 (DAEJIN-AS-KR) is held by Daejin University, a private university in Pocheon, Gyeonggi Province, north of Seoul. Reverse DNS in its address space confirms the holder directly: a sampled address in 203.237.64.0/19 resolves to elec.daejin.ac.kr, a departmental host in the university's own daejin.ac.kr zone.

What it's used for

The campus network. RIS sees 11 IPv4 prefixes carrying 11,264 addresses, dominated by a single 203.237.64.0/19 with a scattering of /23s and /24s from 220.68, 220.90, 220.85 and 121.164 added around it. Just 1 BGP neighbour is observed and there is no IPv6. One upstream and an /19 of legacy space is exactly what a mid-sized Korean university looks like from the outside: enough addresses to number student labs, faculty offices, residence halls and a public web presence, and a single transit relationship because the campus is a customer of the national research or commercial network rather than a peer of anyone. No transit, hosting or eyeball-ISP behaviour is present in the routing.

Notable

• The .ac.kr PTR pattern is the strongest single confirmation in this network's evidence, and it is consistent with the registered holder rather than contradicting it.
• The small 220.x and 121.164.x prefixes are later provider-assigned top-ups sitting alongside the original /19.
• Single-homed with no IPv6 announcement, which is common for Korean campuses of this generation.