65,536 routable6 ASes
/16 subnet
121.133.0.0/16
Where this subnet is, who announces it, and what our databases hold in it. Below, every /24 inside it; open one for its addresses.
65,536
routable addresses
65,536
geolocated
1
country
6
announcing ASes
5
announced prefixes
541
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 Telecom64,256 · 98.05%
- AS38394Gyeonggido Seongnam Office of Education256 · 0.39%
- AS38395GwangJuHaNam Office of Education256 · 0.39%
- AS38399Gyeonggi-do Yeoju Office of Education256 · 0.39%
- AS38412Gyeonggi-Do Icheon office of Education256 · 0.39%
- AS45401NICE Information Telecommunication, Inc256 · 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 IP1980.30%
- 0.54%
- 0.05%
- 0.01%
- 0.00%
- None here
- None here
- None here
- None here
- Carrier IP65,536100.00%
- None here
- None here
- SSH IP2190.33%
- SMTP IP200.03%
- 0.17%
- Web IP1,2371.89%
- 1.44%
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 |
|---|---|---|---|---|---|
| 121.133.126.0/24 | AS45401NICE Information Telecommunication, Inc | South Korea | Not found | 18 | 2026-10-02 |
| 121.133.198.0/24 | AS38394Gyeonggido Seongnam Office of Education | South Korea | Not found | 18 | 2026-10-02 |
| 121.133.199.0/24 | AS38395GwangJuHaNam Office of Education | South Korea | Not found | 18 | 2026-10-02 |
| 121.133.203.0/24 | AS38399Gyeonggi-do Yeoju Office of Education | South Korea | Not found | 18 | 2026-10-02 |
| 121.133.209.0/24 | AS38412Gyeonggi-Do Icheon office of Education | South Korea | Not found | 18 | 2026-10-02 |
Every /24 inside it
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