Autonomous system
AS9528 CBE-AS-KR Taejon Institute of Education Science
Education APNIC
Summary
Chungcheongbuk-do Education Research and Information Institute
education government legacy
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.
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.
Transit providers
1 upstream, 0 downstream and 1 adjacent networks observed; most-used upstreams first.
| AS | Network | Paths seen |
|---|---|---|
| AS3786 | LG DACOM Corporation | 9,300 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-14, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 132 prefixes · 39.68K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| KR | Korea, Republic of | 132 |
Registry
Allocation record
- Registry
- APNIC
- Handle
AS9528- Registry name
- CBE-AS-KR-KR
- Abuse contact
- hostmaster@nic.or.kr
- Registered
- 1999-05-13
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 155 with no ROA
- ROAs
- 0 authorising AS9528
- ASPA
- no ASPA record
- IRR
- 5% registered · 8 of 155 announcements 9 other origin
- Route objects
- 21 naming AS9528
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 1,773 prefixes, as published 2026-10-13. 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