Autonomous system
AS10197 CNU-AS-KR Chonnam National University
Education RIPE
Summary
Chonnam National University
education university korea
CNU-AS-KR is Chonnam National University, a large national research university in Gwangju with additional campuses at Yeosu and Hwasun.
What it's used for
- Campus networking for a national university: faculty and administrative systems, research groups and their servers, libraries, hospital and dormitory access, plus the links out to Korea's research-and-education backbone and to commercial transit.
Notable
This is a textbook education network, and the address footprint is what makes that legible. RIS sees 11 announced IPv4 prefixes totalling 65,536 addresses — a full legacy /16 at 168.131.0.0/16, with ten more-specific /24s deaggregated out of it — plus 1 IPv6 prefix and 4 observed neighbours.
The 168.131.0.0/16 block is the giveaway. A whole class-B assigned to one institution is a pre-CIDR artefact of the era when universities were the internet's early adopters and address space was handed out by the class; no commercial network founded today would be given one. The ten deaggregated /24s alongside the covering /16 are ordinary traffic engineering — steering individual campus subnets down different upstreams — not a sign of fragmentation. Four neighbours is a multi-homed customer edge, not a carrier.
Interesting
The IPv6 announcement is 2402:1::/36, one of the lowest-numbered blocks in the whole 2402::/16 APNIC range — an early-adopter allocation from when Korean universities were among the first networks anywhere to deploy IPv6 in production. The Catholic University of Pusan sits one number later at AS10198.
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.
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-22, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 28 prefixes · 65.54K addresses IPv6 1 prefixes
| Country | Name | Prefixes |
|---|---|---|
| KR | Korea, Republic of | 29 |
Registry
Allocation record
- Registry
- RIPE
- Handle
AS10197- Registry name
- CNU-AS-KR-KR
- Abuse contact
- hostmaster@nic.or.kr
- Registered
- 2000-09-01
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 12 with no ROA
- ROAs
- 0 authorising AS10197
- ASPA
- no ASPA record
- IRR
- 100% registered · 12 of 12 announcements
- Route objects
- 11 naming AS10197
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 1,779 prefixes, as published 2026-10-23. 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