AS9781 — GCS-AS-KR GREEN CABLE TELEVISION STATION
Network type: residential
AS9781 announces 51 IPv4 prefixes covering 106,492 addresses and 0 IPv6 prefixes.
About this network
AS9781 (GCS-AS-KR) is held by Green Cable Television Station, a cable television and broadband system operator based in Dalseo-gu, Daegu, in south-eastern South Korea. Despite the broadcast-sounding name, the AS is a working access ISP: Korean cable SOs have delivered internet over their HFC plant for decades, and the routing evidence matches that role.
What it's used for
Residential and small-business broadband in the operator's franchise area. RIS sees 65 IPv4 prefixes carrying 106,496 addresses against only 4 observed BGP neighbours. That ratio is the tell. A hundred thousand addresses is a substantial pool, but a wholesale carrier holding that much space would peer with hundreds of networks; four adjacencies means the traffic is going one way, out to a small number of national upstreams, and the addresses are being consumed by the operator's own subscribers. Publicly reported upstreams are the major Korean carriers, which is exactly the shape of a regional cable ISP buying transit rather than selling it.
Notable
- The address space is deeply fragmented for a network of this size: 65 announcements built from a couple of /18s in 121.55.0.0 and 114.199.0.0, a stack of /19s and /20s, and many smaller pieces, several of them more-specifics of each other.
- No IPv6 is announced, which leaves subscribers on IPv4 only.
- The operator is a regional player tied to Daegu, not one of the nationwide Korean broadband brands.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.
Announced prefixes
- 27.113.0.0/17
- 114.199.0.0/20
- 114.199.16.0/23
- 114.199.18.0/25
- 114.199.18.128/26
- 114.199.18.192/27
- 114.199.18.224/28
- 114.199.18.240/30
- 114.199.18.244/32
- 114.199.18.246/31
- 114.199.18.248/29
- 114.199.19.0/24
- 114.199.20.0/22
- 114.199.24.0/21
- 114.199.32.0/23
- 114.199.34.0/27
- 114.199.34.32/28
- 114.199.34.48/29
- 114.199.34.56/30
- 114.199.34.61/32
- 114.199.34.62/31
- 114.199.34.64/26
- 114.199.34.128/25
- 114.199.35.0/24
- 114.199.36.0/22
- 114.199.40.0/21
- 114.199.48.0/25
- 114.199.48.128/26
- 114.199.48.192/27
- 114.199.48.224/28
- 114.199.48.240/30
- 114.199.48.244/32
- 114.199.48.246/31
- 114.199.48.248/29
- 114.199.49.0/24
- 114.199.50.0/23
- 114.199.52.0/24
- 114.199.53.0/25
- 114.199.53.128/26
- 114.199.53.192/27
- 114.199.53.224/29
- 114.199.53.232/31
- 114.199.53.235/32
- 114.199.53.236/30
- 114.199.53.240/28
- 114.199.54.0/23
- 114.199.56.0/21
- 119.17.0.0/19
- 121.55.64.0/18
- 121.55.128.0/18
- 125.208.192.0/18
Upstream networks
Adjacent networks
awaiting query
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