AS9528 CBE-AS-KR Taejon Institute of Education Science

AS9528 (CBE-AS-KR) is held by the Chungcheongbuk-do Education Research and Information Institute, the information-services arm of the North Chungcheong Provincial Office of Education in Cheongju. CBE is Chungbuk Education: this is the provincial schools network, covering the province's primary and secondary schools and education offices.

What it's used for

The evidence is a textbook provincial school network. RIS sees 155 IPv4 prefixes carrying 39,680 addresses, no IPv6, and a single BGP neighbour. That combination — a large prefix count, a moderate address count, and exactly one upstream — only makes sense one way: the space is chopped into per-site blocks, overwhelmingly /24s, and each is announced individually because each belongs to a different school or office. Averaged out, 39,680 addresses over 155 prefixes is about a /24 apiece.

The blocks come from many different parent ranges (61.108.x dominates, with 211.35.x, 211.42.x, 210.220.x, 210.100.x, 125.244.x, 211.114.x, 117.111.x alongside), which is what decades of piecemeal assignment to individual schools looks like when the provincial institute later consolidates them all under one AS. The single neighbour confirms there is no provider role here: the institute buys transit and distributes it internally.

Notable

• The registry holder name and older third-party listings disagree — some sources still label this AS with an unrelated Daejeon-area education body. The RIPE/APNIC holder record is the reliable one.
• 155 announcements for one provincial education authority is a heavy routing-table footprint relative to the address count; it is an artefact of per-school assignment history, not of traffic engineering.