65,536 routable5 ASes
/16 subnet
121.128.0.0/16
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
5
announcing ASes
8
announced prefixes
442
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.
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 IP1870.29%
- 0.41%
- 0.03%
- 0.00%
- None here
- None here
- None here
- None here
- None here
- Carrier IP65,536100.00%
- None here
- None here
- SSH IP1680.26%
- 0.01%
- 0.16%
- Web IP1,0791.65%
- 1.06%
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 |
|---|---|---|---|---|---|
| 121.128.28.0/24 | AS4790Chosun ilbo Inc. | South Korea | Not found | 18 | 2026-10-02 |
| 121.128.29.0/24 | AS4790Chosun ilbo Inc. | South Korea | Not found | 18 | 2026-10-02 |
| 121.128.55.0/24 | AS9647Seoul Metropolitan Government | South Korea | Not found | 18 | 2026-10-02 |
| 121.128.97.0/24 | AS152214Korean Air Lines | South Korea | Not found | 18 | 2026-10-02 |
| 121.128.166.0/24 | AS4790Chosun ilbo Inc. | South Korea | Not found | 18 | 2026-10-02 |
| 121.128.219.0/24 | AS9647Seoul Metropolitan Government | South Korea | Not found | 18 | 2026-10-02 |
| 121.128.224.0/24 | AS38122Seoul Guarantee Insurance Company | South Korea | Not found | 18 | 2026-10-02 |
| 121.128.225.0/24 | AS38122Seoul Guarantee Insurance Company | South Korea | Not found | 18 | 2026-10-02 |
Every /24 inside it
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