Autonomous system
AS9319 HCNCHUNGJU-AS-KR HCN CHUNGBUK CABLE TV SYSTEMS
Residential ARIN
Summary
HCN Chungbuk Cable TV (KT HCN)
isp residential legacy
AS9319 (HCNCHUNGJU-AS-KR) is held by HCN Chungbuk Cable TV Systems, the North Chungcheong regional arm of the Korean cable operator HCN (formerly Hyundai HCN). Registry contacts place it in Cheongju, Chungcheongbuk-do, and use a kthcn.co.kr address, reflecting the operator's absorption into the KT group.
What it's used for
This is a cable broadband eyeball network, and the routing evidence says so plainly. RIS sees 202 IPv4 prefixes carrying 93,696 addresses with no IPv6, announced through just 1 observed BGP neighbour. A single upstream and ninety-odd thousand addresses is the exact opposite of a transit operator's profile: everything here is subscriber space, backhauled to one carrier.
The prefix list is the other tell. Apart from a single 112.72.128.0/17, the announcements are almost entirely /22s — dozens of them, scattered across 112.72.x, 49.143.x, 111.118.x and 27.35.x. That fragmentation into uniform small blocks is what a cable operator's regional headend allocations look like: address space handed out in fixed-size chunks per serving area as the network grew, rather than the aggregated blocks a carrier would announce.
Notable
- Korean cable operators historically registered one ASN per regional franchise, which is why a single province's cable TV system holds its own low-numbered AS.
- The network carries broadband subscribers of a cable television franchise, so the eyeballs here are residential rather than business.
- No IPv6 is announced.
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 |
|---|---|---|
| AS7562 | HCN Dongjak | 12,587 |
Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-25, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.
Address space
Summary
IPv4 74 prefixes · 93.95K addresses IPv6 0 prefixes
| Country | Name | Prefixes |
|---|---|---|
| KR | Korea, Republic of | 74 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS9319- Registry name
- HCNCHUNGJU-AS-KR-KR
- Abuse contact
- hostmaster@nic.or.kr
- Registered
- 1998-06-03
- Allocation
- allocated
Routing security
RPKI and IRR
- RPKI
- 0% valid · 0 valid, 204 with no ROA
- ROAs
- 0 authorising AS9319
- ASPA
- no ASPA record
- IRR
- 85% registered · 174 of 204 announcements
- Route objects
- 261 naming AS9319
Reputation
Classification and threat
Residential Fixed-line consumer ISP. Addresses here are homes.
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: 443 networks and 1,779 prefixes, as published 2026-10-24. 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