203.231.104.0/21
🇰🇷CIDR
203.231.104.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇰🇷 South Korea
City
Gwacheon-si (Gwacheon-daero)
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.231.104.0/21 | AS9848SejongTelecom-AS-KR-KR - SEJONG NETWORKS | No ROA | RADB | 5/31/2026 |
Covering Prefix
3 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 203.231.0.0/16 | AS9848SejongTelecom-AS-KR-KR - SEJONG NETWORKS | No ROA | — | 5/31/2026 |
| 203.231.109.0/24 | AS21859ZEN-ECN - Zenlayer Inc | No ROA | — | 5/31/2026 |
| 203.231.107.0/24 | AS136897ENJOYVC-AS-AP - Enjoyvc Cloud Group Limited. | No ROA | — | 5/31/2026 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS9848 | RADB | MAINT-AS4670 | 11/11/2025 |
Geolocation
Country🇰🇷South KoreaKR
RegionGyeonggi-do
CityGwacheon-si (Gwacheon-daero)
Coordinates37.4041, 126.9780 ↗
API
Open https://api.ipctl.io/v1/prefix/203.231.104.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/203.231.104.0/21" | jq
External Links