221.133.48.0/21
🇰🇷CIDR
221.133.48.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇰🇷 South Korea
City
Yongsan-dong (Nonhyeon-ro 81-gil)
RIR
RIPE
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 221.133.48.0/21 | AS9712KPIN-AS-KR-KR - INet Technologies Co., Ltd. | No ROA | — | 6/2/2026 |
Covering Prefix
2 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 221.133.54.0/24 | AS9712KPIN-AS-KR-KR - INet Technologies Co., Ltd. | No ROA | — | 6/2/2026 |
| 221.133.55.0/24 | AS55615DUZONBIZON-AS-KR-KR - DOUZONEBIZON | No ROA | — | 6/2/2026 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 221.133.48.0/22 | 🇰🇷KR | allocated | |
| 221.133.52.0/23 | 🇰🇷KR | allocated | |
| 221.133.55.0/24 | AS55615 | 🇰🇷KR | allocated |
| 221.133.52.0/24 | 🇰🇷KR | assigned | |
| 221.133.48.0/24 | 🇰🇷KR | assigned | |
| 221.133.49.0/24 | 🇰🇷KR | assigned | |
| 221.133.51.0/24 | 🇰🇷KR | assigned | |
| 221.133.54.0/24 | AS9712 | 🇰🇷KR | allocated |
| 221.133.50.0/24 | 🇰🇷KR | assigned | |
| 221.133.53.0/24 | 🇰🇷KR | assigned |
Geolocation
Country🇰🇷South KoreaKR
RegionSeoul
CityYongsan-dong (Nonhyeon-ro 81-gil)
Coordinates37.4980, 127.0370 ↗
API
Open https://api.ipctl.io/v1/prefix/221.133.48.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/221.133.48.0/21" | jq
External Links