Autonomous System
AS9781 GCS AS KR
ISPActiveSouth KoreaAPNIC
AS9781 (GCS-AS-KR-KR) is an ISP network operated by GCS AS KR in South Korea, registered with APNIC. It has 65 IPv4 prefixes with 204,800 addresses, which makes it the 1,267th largest of 82,141 active autonomous systems by IPv4 space.
IPv4 addresses204,800in 65 prefixes
IPv6 prefixes0none
Size rank#1,267of 82,141 active ASNs
Details
OrganizationGCS AS KR
AS nameGCS-AS-KR-KR
Websitegcs.co.kr
Country South Korea (KR)
Network typeISP
RegistryAPNIC
Abuse contactirt@nic.or.kr
Registered—
Last updated2019-05-13
IPv4 prefixes
65 prefixes · 204,800 addresses| Network | Addresses | First – last address |
|---|---|---|
| 114.199.0.0/18 | 16,384 | 114.199.0.0 – 114.199.63.255 |
| 121.55.64.0/18 | 16,384 | 121.55.64.0 – 121.55.127.255 |
| 121.55.128.0/18 | 16,384 | 121.55.128.0 – 121.55.191.255 |
| 119.17.0.0/19 | 8,192 | 119.17.0.0 – 119.17.31.255 |
| 125.208.192.0/19 | 8,192 | 125.208.192.0 – 125.208.223.255 |
| 121.55.64.0/20 | 4,096 | 121.55.64.0 – 121.55.79.255 |
| 121.55.80.0/20 | 4,096 | 121.55.80.0 – 121.55.95.255 |
| 121.55.96.0/20 | 4,096 | 121.55.96.0 – 121.55.111.255 |
| 121.55.112.0/20 | 4,096 | 121.55.112.0 – 121.55.127.255 |
| 121.55.128.0/20 | 4,096 | 121.55.128.0 – 121.55.143.255 |
| 121.55.144.0/20 | 4,096 | 121.55.144.0 – 121.55.159.255 |
| 121.55.160.0/20 | 4,096 | 121.55.160.0 – 121.55.175.255 |
| 121.55.176.0/20 | 4,096 | 121.55.176.0 – 121.55.191.255 |
| 27.113.0.0/21 | 2,048 | 27.113.0.0 – 27.113.7.255 |
| 27.113.8.0/21 | 2,048 | 27.113.8.0 – 27.113.15.255 |
| 27.113.16.0/21 | 2,048 | 27.113.16.0 – 27.113.23.255 |
| 27.113.24.0/21 | 2,048 | 27.113.24.0 – 27.113.31.255 |
| 27.113.32.0/21 | 2,048 | 27.113.32.0 – 27.113.39.255 |
| 27.113.40.0/21 | 2,048 | 27.113.40.0 – 27.113.47.255 |
| 27.113.48.0/21 | 2,048 | 27.113.48.0 – 27.113.55.255 |
| 27.113.56.0/21 | 2,048 | 27.113.56.0 – 27.113.63.255 |
| 27.113.64.0/21 | 2,048 | 27.113.64.0 – 27.113.71.255 |
| 27.113.72.0/21 | 2,048 | 27.113.72.0 – 27.113.79.255 |
| 27.113.80.0/21 | 2,048 | 27.113.80.0 – 27.113.87.255 |
| 27.113.88.0/21 | 2,048 | 27.113.88.0 – 27.113.95.255 |
114.199.0.0/18 121.55.64.0/18 121.55.128.0/18 119.17.0.0/19 125.208.192.0/19 121.55.64.0/20 121.55.80.0/20 121.55.96.0/20 121.55.112.0/20 121.55.128.0/20 121.55.144.0/20 121.55.160.0/20 121.55.176.0/20 27.113.0.0/21 27.113.8.0/21 27.113.16.0/21 27.113.24.0/21 27.113.32.0/21 27.113.40.0/21 27.113.48.0/21 27.113.56.0/21 27.113.64.0/21 27.113.72.0/21 27.113.80.0/21 27.113.88.0/21
The 25 largest of 65. The API and the database have all of them.
IPv6 prefixes
No IPv6 prefixes.
Query AS9781 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS9781&key=YOUR_API_KEY"Any address in its prefixes resolves to AS9781, with or without a key:
curl "https://api.ipapi.is/?q=114.199.0.1"