AS7562 — HCNSEOCHO-AS-KR HCN Dongjak

Network type: residential

AS7562 announces 119 IPv4 prefixes covering 108,800 addresses and 0 IPv6 prefixes.

About this network

HCNSEOCHO-AS-KR is one of the regional networks of HCN, a South Korean cable operator. HCN was formerly Hyundai HCN, was acquired by KT Skylife in 2021, and now trades as KT HCN. The registry describes this AS as the Dongjak network, run from HCN's offices on Banpo-daero in Seoul.

What it's used for

• Cable broadband and cable television for homes in HCN's Seoul franchise areas. Korean cable operators are licensed by district, and this AS carries one such regional network.
• The AS holds over a hundred thousand addresses across more than a hundred prefixes, which is subscriber-scale rather than corporate-scale.

Notable

• An eyeball network. The addresses sit in front of residential cable modem customers, so they should be read as consumer broadband and not as hosting or business space.
• The handle and the description disagree about which district this is: the handle says Seocho, the registry description says Dongjak. Both are Seoul districts, and the registered address is HCN's own office rather than the franchise area, so neither should be leaned on for fine-grained geolocation within Seoul.
• Reverse DNS is absent across the space. That is normal for Korean access networks and is not in itself a warning sign.

Interesting

• KT Skylife's purchase of HCN drew antitrust conditions in Korea, because the KT group already led both pay-TV and fixed broadband and HCN was dominant in several of its local markets.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 1.222.200.0/22
• 27.35.4.0/22
• 27.35.8.0/21
• 39.126.11.0/24
• 39.126.23.0/24
• 39.126.24.0/21
• 39.126.32.0/21
• 39.126.40.0/24
• 39.126.42.0/23
• 39.126.54.0/23
• 39.126.58.0/23
• 39.126.61.0/24
• 39.126.63.0/24
• 39.126.64.0/23
• 39.126.69.0/24
• 39.126.70.0/23
• 39.126.75.0/24
• 39.126.79.0/24
• 39.126.90.0/24
• 39.126.94.0/23
• 39.126.96.0/24
• 39.126.98.0/23
• 39.126.110.0/24
• 39.126.115.0/24
• 39.126.116.0/22
• 39.126.120.0/23
• 39.126.125.0/24
• 39.126.206.0/23
• 39.126.208.0/22
• 39.126.212.0/23
• 39.126.224.0/19
• 45.8.174.0/23
• 49.1.217.0/24
• 49.1.218.0/23
• 49.1.224.0/22
• 49.142.0.0/22
• 49.142.4.0/23
• 49.142.6.0/24
• 49.142.8.0/21
• 49.142.64.0/23
• 49.142.66.0/24
• 49.142.72.0/21
• 49.142.180.0/23
• 58.76.160.0/20
• 58.76.176.0/21
• 58.76.185.0/24
• 58.76.186.0/23
• 58.76.188.0/22
• 58.140.88.0/22
• 58.140.97.0/24
• 58.140.98.0/23
• 58.140.218.0/23
• 58.141.85.0/24
• 58.141.86.0/23
• 58.141.89.0/24
• 58.141.90.0/23
• 58.141.92.0/22
• 58.141.113.0/24
• 58.141.114.0/23
• 58.141.116.0/22
• 58.141.120.0/23
• 58.141.123.0/24
• 58.141.124.0/23
• 58.141.127.0/24
• 58.141.128.0/22
• 58.141.132.0/24
• 58.141.232.0/22
• 58.141.247.0/24
• 58.142.124.0/22
• 59.187.192.0/18
• 101.235.196.0/22
• 101.235.208.0/22
• 110.35.148.0/22
• 110.35.152.0/21
• 110.35.160.0/22
• 110.35.168.0/22
• 111.118.0.0/23
• 111.118.20.0/22
• 111.118.24.0/21
• 111.118.32.0/22
• 111.118.40.0/22
• 111.118.48.0/22
• 111.118.56.0/23
• 111.118.63.0/24
• 112.214.17.0/24
• 112.214.18.0/23
• 112.214.31.0/24
• 112.214.104.0/22
• 114.199.140.0/24
• 114.199.148.0/22
• 114.199.152.0/23
• 114.199.159.0/24
• 118.91.0.0/21
• 118.176.160.0/23
• 120.50.80.0/23
• 120.50.88.0/22
• 120.142.22.0/23
• 120.142.52.0/22
• 120.142.188.0/22
• 120.142.248.0/23

and 19 more.

Upstream networks

• AS4766 Korea Telecom
• AS3786 LG DACOM Corporation
• AS9848 SEJONG NETWORKS
• AS9318 SK Broadband Co Ltd

Downstream networks

• AS23584 PUSAN CABLE TV SYSTEM CO., LTD.
• AS9319 HCN CHUNGBUK CABLE TV SYSTEMS
• AS9762 kt HCN Co.,Ltd.
• AS7623 Gyeongbuk Cable TV
• AS9569 SEOCHO CABLE SYSTEMS CO., LTD.
• AS9981 Saero Network Service LTD
• AS10175 Kumho Cable
• AS139648 PacketStream Korea

Adjacent networks

• AS4766 Korea Telecom
• AS23584 PUSAN CABLE TV SYSTEM CO., LTD.
• AS9319 HCN CHUNGBUK CABLE TV SYSTEMS
• AS3786 LG DACOM Corporation
• AS9762 kt HCN Co.,Ltd.
• AS7623 Gyeongbuk Cable TV
• AS9569 SEOCHO CABLE SYSTEMS CO., LTD.
• AS9848 SEJONG NETWORKS
• AS9981 Saero Network Service LTD
• AS10175 Kumho Cable
• AS9318 SK Broadband Co Ltd
• AS139648 PacketStream Korea

Internet exchanges

• Korea Internet Neutral Exchange KINX — Seoul, South Korea