65,536 routable10 ASes
/16 subnet
210.121.0.0/16
Where this subnet is, who announces it, and what our databases hold in it. Below, every /24 inside it; open one for its addresses.
65,536
routable addresses
65,536
geolocated
1
country
10
announcing ASes
41
announced prefixes
865
anonymous addresses
Where it is
Addresses IP Geolocation places in each country, as a share of those it places.
- South Korea65,536 · 100.00%
Who announces it
Each /24 counted for the AS announcing most of it, as a share of the routable addresses.
- AS4766Korea Telecom26,624 · 40.63%
- AS45374CCS20,480 · 31.25%
- AS9848SEJONG NETWORKS12,288 · 18.75%
- AS55627Dongduk Womens University2,560 · 3.91%
- AS18176KOOKMIN UNIVERSITY2,048 · 3.13%
- AS38676flexnetworks512 · 0.78%
- AS10058NACUFOK256 · 0.39%
- AS45382Hostcenter256 · 0.39%
- AS55592Korea Data Telecommunication Co., Ltd.256 · 0.39%
- AS152290Jejuair256 · 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 IP7431.13%
- 0.19%
- 0.02%
- 0.00%
- None here
- None here
- Hosting IP9,98415.23%
- None here
- None here
- None here
- SSH IP7541.15%
- 0.01%
- 0.14%
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 |
|---|---|---|---|---|---|
| 210.121.0.0/17 | AS9848SEJONG NETWORKS | South Korea | not found | 18 | 2026-10-02 |
| 210.121.0.0/21 | AS45374CCS | South Korea | not found | 18 | 2026-10-02 |
| 210.121.8.0/21 | AS45374CCS | South Korea | not found | 18 | 2026-10-02 |
| 210.121.16.0/21 | AS45374CCS | South Korea | not found | 18 | 2026-10-02 |
| 210.121.40.0/21 | AS9848SEJONG NETWORKS | South Korea | not found | 17 | 2026-10-02 |
| 210.121.56.0/21 | AS9848SEJONG NETWORKS | South Korea | not found | 17 | 2026-10-02 |
| 210.121.72.0/21 | AS45374CCS | South Korea | not found | 18 | 2026-10-02 |
| 210.121.80.0/21 | AS45374CCS | South Korea | not found | 18 | 2026-10-02 |
| 210.121.88.0/21 | AS45374CCS | South Korea | not found | 18 | 2026-10-02 |
| 210.121.96.0/21 | AS45374CCS | South Korea | not found | 18 | 2026-10-02 |
| 210.121.104.0/21 | AS45374CCS | South Korea | not found | 18 | 2026-10-02 |
| 210.121.106.0/24 | AS45374CCS | South Korea | not found | 18 | 2026-10-02 |
| 210.121.112.0/21 | AS45374CCS | South Korea | not found | 18 | 2026-10-02 |
| 210.121.120.0/21 | AS45374CCS | South Korea | not found | 18 | 2026-10-02 |
| 210.121.128.0/17 | AS4766Korea Telecom | South Korea | not found | 17 | 2026-10-02 |
| 210.121.131.0/24 | AS55627Dongduk Womens University | South Korea | not found | 17 | 2026-10-02 |
| 210.121.132.0/24 | AS55627Dongduk Womens University | South Korea | not found | 17 | 2026-10-02 |
| 210.121.133.0/24 | AS55627Dongduk Womens University | South Korea | not found | 17 | 2026-10-02 |
| 210.121.134.0/24 | AS55627Dongduk Womens University | South Korea | not found | 17 | 2026-10-02 |
| 210.121.135.0/24 | AS55627Dongduk Womens University | South Korea | not found | 17 | 2026-10-02 |
| 210.121.136.0/24 | AS55627Dongduk Womens University | South Korea | not found | 17 | 2026-10-02 |
| 210.121.137.0/24 | AS55627Dongduk Womens University | South Korea | not found | 17 | 2026-10-02 |
| 210.121.138.0/24 | AS55627Dongduk Womens University | South Korea | not found | 17 | 2026-10-02 |
| 210.121.139.0/24 | AS55627Dongduk Womens University | South Korea | not found | 17 | 2026-10-02 |
| 210.121.140.0/24 | AS55627Dongduk Womens University | South Korea | not found | 17 | 2026-10-02 |
| 210.121.152.0/24 | AS18176KOOKMIN UNIVERSITY | South Korea | not found | 17 | 2026-10-02 |
| 210.121.153.0/24 | AS18176KOOKMIN UNIVERSITY | South Korea | not found | 17 | 2026-10-02 |
| 210.121.154.0/24 | AS18176KOOKMIN UNIVERSITY | South Korea | not found | 17 | 2026-10-02 |
| 210.121.155.0/24 | AS18176KOOKMIN UNIVERSITY | South Korea | not found | 17 | 2026-10-02 |
| 210.121.156.0/24 | AS18176KOOKMIN UNIVERSITY | South Korea | not found | 17 | 2026-10-02 |
| 210.121.157.0/24 | AS18176KOOKMIN UNIVERSITY | South Korea | not found | 17 | 2026-10-02 |
| 210.121.158.0/24 | AS18176KOOKMIN UNIVERSITY | South Korea | not found | 17 | 2026-10-02 |
| 210.121.159.0/24 | AS18176KOOKMIN UNIVERSITY | South Korea | not found | 17 | 2026-10-02 |
| 210.121.164.0/24 | AS45382Hostcenter | South Korea | not found | 18 | 2026-10-02 |
| 210.121.190.0/24 | AS55592Korea Data Telecommunication Co., Ltd. | South Korea | not found | 18 | 2026-10-02 |
| 210.121.201.0/24 | AS10058NACUFOK | South Korea | not found | 18 | 2026-10-02 |
| 210.121.209.0/24 | AS152290Jejuair | South Korea | not found | 18 | 2026-10-02 |
| 210.121.213.0/24 | AS38676flexnetworks | South Korea | not found | 18 | 2026-10-02 |
| 210.121.221.0/24 | AS38676flexnetworks | South Korea | not found | 18 | 2026-10-02 |
| 210.121.228.0/23 | AS4766Korea Telecom | South Korea | not found | 18 | 2026-10-02 |
| 210.121.230.0/24 | AS4766Korea Telecom | South Korea | not found | 18 | 2026-10-02 |
Every /24 inside it
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