221.133.0.0/16
Where this subnet is, who announces it, and what our databases hold in it. Below, every /24 inside it; open one for its addresses.
Where it is
Addresses IP Geolocation places in each country, as a share of those it places.
- South Korea20,480 · 31.25%
- Japan16,416 · 25.05%
- China8,192 · 12.50%
- Vietnam8,192 · 12.50%
- Australia7,943 · 12.12%
- Malaysia4,096 · 6.25%
- American Samoa185 · 0.28%
- Hong Kong32 · 0.05%
Who announces it
Each /24 counted for the AS announcing most of it, as a share of the routable addresses.
- AS17534NSK Co.,Ltd.16,384 · 25.00%
- AS9689SK Broadband Co Ltd12,544 · 19.14%
- AS703Verizon Business8,192 · 12.50%
- AS7602Sai gon Postel Corporation8,192 · 12.50%
- AS134809ViewQwest Sdn. Bhd.4,096 · 6.25%
- AS9712INet Technologies Co., Ltd.3,840 · 5.86%
- AS38096SK Broadband Co Ltd3,840 · 5.86%
- AS4812China Telecom (Group)2,816 · 4.30%
- AS55615DOUZONEBIZON256 · 0.39%
What the databases see
Addresses each address-keyed database holds in this block, as a share of its routable addresses. Counts overlap: one address can be in several.
- VPN IP1320.20%
- 0.26%
- None here
- 0.00%
- 0.00%
- None here
- None here
- Hosting IP1,7922.73%
- None here
- Carrier IP11,00816.80%
- None here
- None here
- SSH IP4650.71%
- 0.01%
- 0.05%
- Web IP2070.32%
- 0.19%
Announced prefixes
Every prefix inside this block that BGP Route saw announced, with its origin and RPKI status.
| PREFIX | ORIGIN | COUNTRY | RPKI | PEERS | FIRST SEEN |
|---|---|---|---|---|---|
| 221.133.0.0/20 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 18 | 2026-10-02 |
| 221.133.0.0/22 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 18 | 2026-10-02 |
| 221.133.0.0/24 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 18 | 2026-10-02 |
| 221.133.1.0/24 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 18 | 2026-10-02 |
| 221.133.4.0/22 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 18 | 2026-10-02 |
| 221.133.8.0/22 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 18 | 2026-10-02 |
| 221.133.12.0/22 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 18 | 2026-10-02 |
| 221.133.16.0/22 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 18 | 2026-10-02 |
| 221.133.20.0/22 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 1 | 2026-10-29 |
| 221.133.20.0/24 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 17 | 2026-10-02 |
| 221.133.21.0/24 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 17 | 2026-10-14 |
| 221.133.22.0/24 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 17 | 2026-10-02 |
| 221.133.23.0/24 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 17 | 2026-10-02 |
| 221.133.24.0/22 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 1 | 2026-10-29 |
| 221.133.24.0/24 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 17 | 2026-10-02 |
| 221.133.25.0/24 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 17 | 2026-10-02 |
| 221.133.26.0/23 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 17 | 2026-10-02 |
| 221.133.26.0/24 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 1 | 2026-10-29 |
| 221.133.27.0/24 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 1 | 2026-10-29 |
| 221.133.28.0/22 | AS7602Sai gon Postel Corporation | Vietnam | Valid | 18 | 2026-10-02 |
| 221.133.32.0/21 | AS134809ViewQwest Sdn. Bhd. | Malaysia | Valid | 18 | 2026-10-02 |
| 221.133.40.0/21 | AS134809ViewQwest Sdn. Bhd. | Malaysia | Valid | 18 | 2026-10-02 |
| 221.133.48.0/21 | AS9712INet Technologies Co., Ltd. | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.54.0/24 | AS9712INet Technologies Co., Ltd. | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.55.0/24 | AS55615DOUZONEBIZON | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.56.0/21 | AS9712INet Technologies Co., Ltd. | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.61.0/24 | AS9712INet Technologies Co., Ltd. | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.63.0/24 | AS9712INet Technologies Co., Ltd. | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.64.0/18 | AS17534NSK Co.,Ltd. | Japan | Not found | 17 | 2026-10-02 |
| 221.133.128.0/18 | AS9689SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.128.0/21 | AS9689SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.136.0/24 | AS9689SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.137.0/24 | AS38096SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.138.0/24 | AS9689SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.140.0/23 | AS9689SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.142.0/24 | AS38096SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.143.0/24 | AS38096SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.144.0/24 | AS38096SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.145.0/24 | AS9689SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.146.0/24 | AS38096SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.147.0/24 | AS38096SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.149.0/24 | AS38096SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.150.0/24 | AS38096SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.151.0/24 | AS9689SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.152.0/24 | AS9689SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.153.0/24 | AS38096SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.154.0/24 | AS38096SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.155.0/24 | AS38096SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.156.0/22 | AS9689SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.160.0/21 | AS9689SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.168.0/23 | AS9689SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.170.0/24 | AS38096SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.171.0/24 | AS38096SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.172.0/24 | AS38096SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.173.0/24 | AS38096SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.174.0/23 | AS9689SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.176.0/20 | AS9689SK Broadband Co Ltd | South Korea | Not found | 18 | 2026-10-02 |
| 221.133.192.0/19 | AS703Verizon Business | Australia | Not found | 17 | 2026-10-02 |
| 221.133.225.0/24 | AS4812China Telecom (Group) | China | Valid | 17 | 2026-10-02 |
| 221.133.226.0/24 | AS4812China Telecom (Group) | China | Valid | 17 | 2026-10-02 |
| 221.133.228.0/23 | AS4812China Telecom (Group) | China | Valid | 17 | 2026-10-02 |
| 221.133.230.0/23 | AS4812China Telecom (Group) | China | Valid | 17 | 2026-10-02 |
| 221.133.232.0/23 | AS4812China Telecom (Group) | China | Valid | 1 | 2026-10-02 |
| 221.133.232.0/24 | AS4812China Telecom (Group) | China | Invalid, too specific | 3 | 2026-10-31 |
| 221.133.235.0/24 | AS4812China Telecom (Group) | China | Valid | 16 | 2026-10-02 |
| 221.133.244.0/24 | AS4812China Telecom (Group) | China | Valid | 17 | 2026-10-02 |
| 221.133.245.0/24 | AS4812China Telecom (Group) | China | Valid | 17 | 2026-10-02 |
Every /24 inside it
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