AS9775 HANNAM-AS Hannam University

AS9775 (HANNAM-AS) is held by Hannam University, a private university in Daejeon. This is the campus network, carrying the university's students, staff, laboratories and public-facing services.

What it's used for

RIS shows 13,056 IPv4 addresses across 10 prefixes. The footprint is anchored on 203.247.32.0/19 — half the total on its own — with a 203.241.32.0/21 and a 203.247.212.0/22 beside it, then a tail of /24s spread across 210.125.104-106, 59.26.221-223 and a single 202.30.54.0/24. Space drawn from several unrelated ranges, in decreasing sizes, is the accretion pattern of a campus that was allocated address blocks piecemeal over many years rather than in one grant.

All of it hangs off one observed BGP neighbour. That single number is what rules out any other reading of the network: a transit or wholesale operator with 13,000 addresses would peer with hundreds of ASes, while an access or research network serving only its own users needs exactly one upstream. In Korea that upstream is typically the national research-and-education backbone. The ASN exists so the university can hold and announce portable space consistently, not to multi-home.

No IPv6 is announced from this ASN, which is common across the Korean campus networks in this legacy ASN range even though the country's commercial IPv6 deployment is well advanced.

Notable

• 202.30.0.0/16-derived space of the kind seen here is early APNIC-era Korean allocation, and its presence alongside 59.x and 210.x blocks reflects decades of separate assignments rather than any structural split in the network.